We're paid ultimately as artificial lift professionals to produce oil and gas from oil wells and, more particularly for those of us in the water management side of things,  to continually improve the economics of oil production from wells by the prevention of water coning and by lessening the production to the surface of undesired formation water.

SOME BACKGROUND OF PROBLEMS IN THIS REGARD

There has been continuing effort in the petroleum industry to improve the economics of oil production by reducing the lifting costs or cost to the pump produced liquids from downhole to the surface of the earth. Normally, in a producing oil well there is formation water associated with the oil. The production interval typically has in it an oil/water interface. This interface is caused by the gravity separation in the earth formation over geologic time of the lighter oil rising above the formation water. A pressure equilibrium is established across this interface. When a well bore intercepts this producing interval the pressure equilibrium is disturbed. If production perforations are established initially in the oil containing portion of the formation and pressure in the well bore reduced below formation pressure, then oil will flow through the casing perforations into the wellbore where it can be pumped to the surface via any type of desired pump such as a surface powered sucker rod pump or by a submersible electric pump lowered on a tubing string into the production zone.

If the flow rate of fluid from the production zone into the wellbore is too rapid then the effect known as water coning can occur. Water from below the oil portion of the producing zone or formation can rush into the near hole voids created by the too rapid intake of oil through the perforations into the wellbore. The oil/water interface in the production zone is "sucked up" into a completely water bearing cone shaped region near the production perforations and can greatly increase the "water cut" of the produced fluids. It can even "water cut" the oil production completely when there is still a large amount of oil left in the production zone.

Of course, this undesirable coning effect can be avoided by reducing production rates through the perforations in the oil producing zone, but it may be desired even necessary to produce the oil faster. On the other hand, by use of the methods and apparatus of the present invention this undesirable effect can be avoided while simultaneously reducing lifting costs for produced oil from the well, overall.

If produced water is pumped to the surface, then lifting costs are increased. To date efforts to reduce lifting costs in such cases have centered around methods to seal off water producing layers. This is typically done with mechanical devices, such as packers, placed between oil producing perforations and water producing perforations. The location of such perforations may not always be known with precision, however. Also "squeeze cementing" where cement is pumped into the casing-borehole annulus or the formation itself through perforations between the oil producing and water producing zones has been attempted. Again a precise knowledge of the location of the formation oil-water interface is necessary to accomplish this successfully. If this location is not known with precision the squeeze cementing operation can be unsuccessful. While water "coning" has been discussed, it will be understood that this mechanism could be used to control other types of water cut problems such as channeling, fingering or cement wash cut, etc.

Here's a different approach to these problems. Regardless of the water production, use special tools wherein produced oil and water are separated downhole using the casing-production tubing annulus as a gravity separator. The separated oil, and only a small portion of produced water, is pumped to the surface by a first electric submersible pump. A second electric submersible pump, powered by the same electric motor, pumps separated produced water through a set of injection perforations below a production packer set in the casing below the production perforations. Thus, the separated water can be returned to the producing formation enabling it to assist in maintaining formation pressure equilibrium during production or disposed of into another separate reservoir.
Lease costs which are directly associated with the volume of total fluid lifted and handled from a producing well are substantially reduced. A reduction in the volume of fluid lifted and handled from the well also results in a lowering of horsepower required to operate the well since only oil, and a small fraction of produced water, are actually lifted to the surface. Similarly, water injection costs, water treating costs, spill containment and cleanup costs are substantially reduced by use of the present invention.

This would also have application with respect to water flooding deeper producing zones in more mature fields. This can be accomplished by the use of production water from shallower zones in the well being injected through former production perforations in the deeper zone desired to be water flooded. This can reduce costs in the drilling of injection wells. It can also affect the location and number of oil wells, injection facility size, reservoir size, pipeline location, and other factors. Small scale floods or pattern reconfiguration would be OK, due to the utility of a single wellbore, and reducing the costs of surface facilities needed.

The above and other features and advantages of the present invention will be best understood by reference to the following detailed description thereof taken in conjunction with the appended drawings. These descriptions and drawings are intended as illustrative of the invention, and not as limitative.

ROV retrievable sea floor pump
US Pat. 7150325 - Filed Jul 25, 2003 - Baker Hughes Incorporated
10 Subsea wells typically connect to a subsea manifold that BRIEF ... One type
of artificial lift for wells employs an electrical submersible pump, ...
[APPLICATION] Submersible well pump installation procedure
US Pat. App 11/068,541 - Filed Feb 28, 2005
Electrical submersible pumps have been installed in surface wells for many years
and more recently in subsea wells to pump the well fluid. ...

Production system and method for producing fluids from a well
US Pat. 6497287 - Filed Jun 7, 2000 - The Board of Regents, The University of Texas System
Such methods include the electrical submersible pump (ESP), the Progressing Cavity
Pump (PCP), and the Jet Pump (JP). Present technology applies ESP's for ...

Integrated subsea power pack for drilling and production
US Pat. 7011152 - Filed Feb 7, 2003 - Vetco Aibel AS
... the step of installing an electric submersible pump in the well; ... and a
drilling fluid pump located subsea that is electrically powered by the power ...

Method and apparatus to prevent hydrate formation in full wellstream pipelines
US Pat. 4589434 - Filed Jun 10, 1985 - Exxon Production Research Co.
Since there may be several reservoirs in a subsea oil and gas field, ...
A submersible pump 32 is positioned inside and near the bottom of the fluid ...

Well operations system
US Pat. 7093660 - Filed Feb 13, 2003 - Cooper Cameron Corporation
Of Machine Design; Electrical Submersible Pump for Subsea Completed Wells; Dec.
1991; (pp. KON 04649- 04807) 2). Findings of Fact, Conclusion of Law, ...

Subsea pump system
US Pat. 5280766 - Filed Mar 30, 1992 - Framo Developments (UK) Limited
No separate con- the provision of a submersible pump system for subsea 25 trol
line to the DHSV is then required, so a vulnerable use which avoids the ...

Subsea connection apparatus
US Pat. 6408947 - Filed Oct 9, 2000 - FMC Corporation
Electric submersible pump (ESP) equipped HXT wells that cannot produce without
... and subsea tree, which would normally be required for CXT systems. ...

Method and apparatus for production of subsea hydrocarbon formations
US Pat. 5381865 - Filed Jan 8, 1993
Up to five connecting tendons 34 may submersible electric pump (not shown in the
... from the subsea well 24 to a flow supported on the production deck 14. ...

Integrated floating platform vertical annular separation and pumping system ...
US Pat. 5474601 - Filed Aug 2, 1994 - Conoco Inc.
For satellite production, subsea flow line and dynamic risers (gas and liquid) to
... Oil is pumped from liquid sump 17 via a submersible pump 20 powered by ...

Sub sea pile-sump pumping arrangement
US Pat. 6419458 - Filed Oct 16, 2000 - Mentor Subsea Technology Services, Inc.
This reduces the expense and risks associated with performing intervention tasks
on the well. The use of an electric submersible pump provides potential ...
Apparatus for aerial water acquisition and sub-sea aqueduct
US Pat. 4092827 - Filed Apr 21, 1977
... wherein the well has a ing an inflatable membrane separating the acquired rain
submersible pump for the delivery of said acquired rain water from the ...

Slimbore subsea completion system and method
US Pat. 6715554 - Filed Oct 9, 2000 - FMC Technologies, Inc.
Electric submersible pump (ESP) equipped HXT wells that cannot produce without
... and subsea tree, which would normally be required for CXT systems. ...

[APPLICATION] Subsea Flowline Jumper Containing ESP
US Pat. App 11/697,100 - Filed Apr 5, 2007 - Baker Hughes Incorporated
Alternately, the receptacles may be located on the same subsea structure, such
as on a base positioned between two subsea structures. A submersible pump ...

Subsea pumping module system and installation method
US Pat. 7314084 - Filed Nov 8, 2004 - Petroleo Brasileiro S.A. - Petrobras
The system of claim 1, further comprising an electric submersible pump, ...
switch installed in subsea equipment close to or on the pumping module. 16. ...

[APPLICATION] ROV retrievable sea floor pump
US Pat. App 10/627,859 - Filed Jul 25, 2003
BACKGROUND OF THE INVENTION [0002] Subsea wells typically connect to a subsea
manifold ... An electrical submersible pump typically has an electrical motor, ...

Virtual sensors to provide expanded downhole instrumentation for electrical ...
US Pat. 6585041 - Filed Jul 23, 2001 - Baker Hughes Incorporated
Cable 103, motor 104 and pump 105, together with a seal (not shown), 20 preferably
form an electrical submersible pump (ESP) system in accordance with the ...

Method and apparatus for production of subsea hydrocarbon formations
US Pat. 5117914 - Filed Dec 13, 1990
It includes a ballast manifold with submersible electrical pump at ballast and
... Each riser 120 may be a tensioned flowline riser with subsea connection. ...

Method and apparatus for joining a subsea pipeline to an offshore platform riser
US Pat. 3967462 - Filed Mar 10, 1975 - Lockheed Petroleum Services Ltd.
During the final stage of the pull-in, a small submersible pump (not shown) is
... Apparatus for joining a subsea pipeline to an offshore platform riser, ...

[APPLICATION] Production system and method for producing fluids from a well
US Pat. App 10/216,703 - Filed Aug 8, 2002
SUMMARY [0015] A production system may include a submersible pump and a jet pump.
... The system may allow, among other things, a submersible pump (possibly ...

[APPLICATION] Completions architecture
US Pat. App 10/085,808 - Filed Feb 28, 2002
If so, then an electrical submersible pump is recommended (at 1074). ... 13 shows
the selection process of an artificial lift system for a subsea well. ...
Sealless multiphase screw-pump-and-motor package
US Pat. 6457950 - Filed May 4, 2000 - Flowserve Management Company
For subsea applications, the screw pumps described herein are configured with
submersible motors for integration of pump and motor into a viable subsea ...

Method and apparatus for production of subsea hydrocarbon formations
US Pat. 5433273 - Filed Nov 29, 1993 - Seahorse Equipment Corporation
It includes a ballast manifold with submersible electrical pump to ballast and
... Each riser 120 may be a tensioned flowline riser with subsea connection. ...

Well management system
US Pat. 6257332 - Filed Sep 14, 1999 - Halliburton Energy Services, Inc.
See for example the paper entitled "Electric Submersible Pump for Subsea ...
to a downhole submersible pump supported on the end of the continuous tubing. ...

Method and apparatus for production of subsea hydrocarbon formations
US Pat. 5549164 - Filed Apr 28, 1995 - Seahorse Equipment Corporation
It includes a ballast manifold with submersible electrical pump to ballast and
... Each riser 120 may be a tensioned flowline riser with subsea connection. ...
Device for suspending a sub sea oil well riser
US Pat. 5778981 - Filed Jul 29, 1996
... for servicing or installation of heavy fluid which is replaced by a relatively
lighter fluid electric submersible pumps to enhance production rates or ...

Pipeline pigging
US Pat. 6109829 - Filed Aug 20, 1998 - Coflexip Stena Offshore Ltd.
Preferably also, said pipeline is an existing subsea pipeline, and said means for
... has been inserted into the liner feed pipe 14, a submersible pump 30, ...

Method for enhancing the flow of heavy crudes through subsea pipelines
US Pat. 6264401 - Filed Mar 26, 1996 - Shell Oil Company
In this embodiment takeout 46B at the subsea wellhead end of pipeline 10. the
... eg, to drive a submersible pump in the wellbore 34 wim non-conductive ...

Offshore storage facility and terminal
US Pat. 5129759 - Filed Jul 23, 1991 - PB-KBB, Inc.
Thus, as the surface area is a hydraulic dredging of the subsea floor. of the
... 15 "eludes a submersible pump located adjacent a bottom depth of one-third ...

[APPLICATION] Subsea pumping module system and installation method
US Pat. App 10/982,848 - Filed Nov 8, 2004
Removal of an ESP from the subsea well requires an interruption (loss) of oil
... submersible pump is typically used in the production of offshore oil. ...

Subsea vehicle assisted pipeline commissioning method
US Pat. 6539778 - Filed Jun 26, 2001 - Valkyrie Commissioning Services, Inc.
... the low volume high pressure pump being able to operate both to add water ...
15 the other having a subsea pig receiver comprising: using a submersible ...

Underwater structure
US Pat. 4081970 - Filed Mar 21, 1977 - Golder Hoek and Associates Limited
2) is a subsea completion unit 24 at an oil well head. ... Water draining into
the flexible drain 38 is pumped by submersible pump 44 away from the ...

Subsea power supply
US Pat. 7224080 - Filed Mar 21, 2005 - Schlumberger Technology Corporation
US B2 1 2 SUBSEA POWER SUPPLY BRIEF DESCRIPTION OF THE DRAWINGS ... generator
arrangements for electrical equipment (eg, an electrical submersible pump, ...

Crossover tree system
US Pat. 6675900 - Filed Dec 11, 2002
Electric Submersible Pump for Subsea Completed Wells, Sigbjorn Sangesland, Nordic
Counsel ol Ministers Program for Petroleum Technology, Nov. 26-27, 1991. ...

Electrical submersible pumps in the riser section of subsea well flowline
US Pat. 6412562 - Filed Sep 7, 2000 - Baker Hughes Incorporated
SUMMARY OF THE INVENTION 30 According to the present invention, a submersible
pump of the type that would normally be applied to a downhole well application ...
Subsea well submersible pump installation
US Pat. 4589492 - Filed Oct 10, 1984 - Hughes Tool Company
The submersible pump is suspended by a suspension head located in a tubular member
at the subsea wellhead. An electrical insulator is movably carried in a ...

Completion system
US Pat. 6039119 - Filed Jul 12, 1996 - Cooper Cameron Corporation
SSP-020-001 and 2; SISL Project Team; Subsea Submersible Pumping Project Task Series
... SPE 23050 Electrical Submersible Pumps in Subsea Completions; Sep. ...

Apparatus and method for returning drilling fluid from a subsea wellbore
US Pat. 6457529 - Filed Feb 16, 2001 - ABB Vetco Gray Inc.
A well drilling assembly, comprising in combination: a subsea wellhead; a
submersible, centrifugal pump having an inlet and an outlet, the inlet being in ...

SUBSEA PRODUCTION SYSTEM
US Pat. RE27745 - Filed Jun 29, 1967
A submersible pump in each tank can pump out the treating fluid as necessary.
The submersible pump would be powered through the subsea power distribution ...

BROOKS ETAL SUBSEA PRODUCTION SYSTEM
US Pat. 3520358 - Filed Jun 29, 1967
A submersible pump in each tank can pump out the treating fluid as necessary.
The submersible pump would be powered through the subsea power distribution ...

System and method for flow/pressure boosting in a subsea environment
US Pat. 6688392 - Filed May 23, 2002 - Baker Hughes Incorporated
Well 1 is located at some 5 distance from subsea processing station 12 where ...
A pump string comprising submersible pump 8, motor 9, and tubing 17 is run ...

SUBSEA PRODUCTION SYSTEM
US Pat. 3621911 - Filed Apr 1, 1969
A submersible pump in each 264 in the submersible vehicle 184 through ...
182 completes a programmed 70 sible pump would be powered through the subsea power ...

Well operations system
US Pat. 6547008 - Filed Sep 7, 2000 - Cooper Cameron Corporation
Of Machine Design; Electrical Submersible Pump for Subsea Completed Wells; Dec.
1991; (pp.). The Nordic Council of Ministers Program for Petroleum ...

[APPLICATION] System and Method for Controlling Subsea Wells
US Pat. App 11164233 - Filed Nov 15, 2005 - SCHLUMBERGER TECHNOLOGY CORPORATION
[0015] In this embodiment, each completion 22 comprises at least one electric
submersible pumping system 38 having a submersible pump 40. Subsea control ...

APPLICATION] Subsea Pumping System
US Pat. App 11/163,959 - Filed Nov 4, 2005 - SCHLUMBERGER TECHNOLOGY CORPORATION
A system for moving a hydrocarbon fluid in a subsea environment, comprising: at
least one multiphase pump; and a set of at least one electrical submersible ...
[APPLICATION] Submersible Pumping System and Method for Boosting Subsea Production Flow
US Pat. App 10907114 - Filed Mar 21, 2005 - SCHLUMBERGER TECHNOLOGY CORPORATION
... from a subsea production well with a submersible pump connected to the production
... BACKGROUND [0003] Subsea flow boosting pumps are generally used to ...

[APPLICATION] Subsea well with electrical submersible pump above downhole safety valve
US Pat. App 11451213 - Filed Jun 12, 2006 -
A subsea well production system, comprising: a subsea production tree at an upper
... an electrical submersible pump assembly installed in an operational ...

Subsea mud pump and control system
US Pat. 6505691 - Filed Aug 6, 2001 - Hydril Company
The subsea pump of claim 1, wherein the hydraulic 55 power supply comprises a
submersible pump disposed proximate the subsea pump on the seafloor. 11. ...

Sub-sea pumping system and associated method including pressure compensating ...
US Pat. 6059539 - Filed May 20, 1997 - Westinghouse Government Services Company LLC
In one such system, an electro-submersible pump has its motor, and in some
applications, a transformer located on the sub-sea station. The motor/pump unit ...

Subsea riser separator system
US Pat. 6651745 - Filed May 2, 2002 - Union Oil Company of California
Songhurst, BW and Eyre, GP, "Experience Gained From the First UK Subsea ...
Deployment of a Novel Multiphase Hydraulic Submersible Pump in Texaco's ...

Sub-sea pumping system and an associated method including pressure ...
US Pat. 5795135 - Filed Dec 5, 1995 - Westinghouse Electric Corp.
In one such system, an been determined to be more power efficient, more flexible
in electro-submersible pump has its motor, and in some operation, ...

Subsea production system
US Pat. 7093661 - Filed Mar 5, 2001 - Aker Kvaerner Subsea AS
Further advantages may be achieved by utilising subsea single phase or multiphase
pump, gas compressor and gas liquid separation. To achieve the above, ...

Christmas tree
US Pat. 6227301 - Filed Jan 11, 1999 - Expro North Sea Limited
In the absence of a requirement for an electrical submersible pump, no power
cable is used and a single axial bore for the cable is provided or, ...

Slimbore subsea completion system and method
US Pat. 6227300 - Filed Oct 7, 1998 - FMC Corporation
Electric submersible pump (ESP) equipped HXT wells that cannot produce without
... and subsea tree, which would normally be required for CXT systems. ...

Submersible electric motor and electrical connector assembly
US Pat. 4053196 - Filed Sep 9, 1976 - Century Electric Motor Co.
1 is an elevational view of a submersible electric motor-pump unit incorporating
an improved electrical connector assembly in accordance with the invention; ...
Electronic device for the control of a submersible pump
US Pat. 4747751 - Filed May 16, 1986
... the liquid is subjected to the SUBMERSIBLE PUMP reduced pressure created by
... top of the central space 4 in electric supply to the motor of the pump, ...

Well completion system employing multiple fluid flow paths
US Pat. 6135210 - Filed Jul 16, 1998 - Camco International, Inc.
In general, one class of submersible pumping systems includes a prime mover,
typically an electric motor, coupled to a pump. The electric motor and pump are ...

Electric in-line snorkel pump for helicopter tanker and method of operation
US Pat. 6209593 - Filed Aug 9, 2000 - Carry Manufacturing
... and a submersible axial flow electric pump having a sealed submersible electric
pump motor, a water inlet, and a pump outlet, said pump outlet being ...

Oil and gas well diversionary spool assembly
US Pat. 4804045 - Filed Nov 6, 1986
... and is capable of supplying electric power and pressurized fluids for down hole
... string by a submersible pump may be controlled by a valved outlet, ...

METHOD AND APPARATUS FOR PROTECTING ELECTRICAL CABLE FOR DOWNHOLE ELECTRICAL ...
US Pat. 3835929 - Filed Aug 17, 1972
The submersible pump and motor 13 would then be assembled and connected to tubing
... A method of installing multiple conductor electric cable into armoring ...

CONVERTIBLE SUBMERSIBLE PUMP
US Pat. 2918876 - Filed Mar 1, 1956 - Velma Rea Howe
(Cl. 103— 87) 10 This invention relates to a submersible pump and in 15 ... The.
drive means 11 normally will include a sealed electric motor having a ...

AIR INJECTION APPARATUS FOR WELL WATER SYSTEM
US Pat. 3393641 - Filed May 4, 1967
Summary of the invention In accordance with the present invention, the same
electric signal that initiates pumping action of the submersible pump triggers ...

Submersible pump stabilizer
US Pat. 4334834 - Filed Sep 28, 1979
Submersible centrifugal pumps powered by electric capture the bottom end of the
pump, yet allow circula- length of a pipe within a well. ...

Deep well pumping apparatus
US Pat. 5573063 - Filed Jul 5, 1995 - Harrier Technologies, Inc.
The tradeoffs in systems such as the electric submersible pump (ESP) type systems
previously referenced, has accentuated the need for exploration into ways ...

Downthrust pads for submersible centrifugal pumps
US Pat. 6106224 - Filed Apr 2, 1998 - Camco International Inc.
One type of pump frequently used in the industry is known as a multi-stage electric
submersible pump. This type of pump includes a downhole motor coupled to ...
Universal pump coupling system
US Pat. 5906479 - Filed Jun 25, 1996
The universal pump coupling system of claim 1, including means for supplying
electric current to said submersible pump and an electric power cord having a ...

PUMPING STATION W
US Pat. 3112760 - Filed May 22, 1961 - Cornell Manufacturing Company
... a pair of electric motor-driven submersible pump units, each including an
electric motor portion and a pump portion, mounted at the base of said one ...

Removable splined shaft end for submersible pumps
US Pat. 6752560 - Filed Jun 17, 2002 - Baker Hughes Incorporated
Field of the Invention 10 The present invention relates generally to electric
submersible pump connections. More specifically, the present invention relates ...

SUBMERSIBLE MOTOR SEAL FLUID AND SECTION
US Pat. 3770635 - Filed Jan 24, 1972 - Minnesota Mining and Manu
There are many uses for submersible motor and pump units such as pumping fluid
from deep oil or water wells. Generally, electric motors having these ...

COOLING OF DRIVING MOTORS OF
US Pat. 2410973 - Filed Nov 6, 1943 - Electrical Engineering and Manufacturing Corporation
A further object of this Invention is to provide air cooling means, for electric
motors forming part of submersible pump devices, which will include means ...

Submersible electric motor and electrical connector assembly
US Pat. 3997232 - Filed May 19, 1975 - Century Electric Motor Co.
1 illustrates a typical deep well submersible motor-pump unit which includes an
electric motor 10 having a cylindrical motor housing 12 coupled to a ...

SHAFT SEAL FOB SUBMERSIBLE PUMPS
US Pat. 2430509 - Filed Nov 6, 1943 - Electrical Engineering and Manufacturing Corporation
1 is a longitudinal, cross-sectional view of a submersible pump device including
shaft sealing means according to this Invention, and Pig. is an enlarged ...

WALSHIN
US Pat. 2927174 - Filed Sep 9, 1957
2 driven by a suitable electric motor mounted within the water tight motor ...
are detachably connected together with suitable water SUBMERSIBLE PUMP ...

System for use in a subterranean environment to vent gas for improved ...
US Pat. 6651740 - Filed Jan 22, 2001 - Schlumberger Technology Corporation
... suspend the electric submersible 5 pumping system within the wellbore casing.
... a submersible motor and a submersible pump powered by the submersible ...

Method of operating an oil and gas production well activated by a pumping system
US Pat. 6119781 - Filed Feb 4, 1999 - Elf Exploration Production
45 The electric motor is conventionally protected against excessive heating by a
... an oil well activated by an electric submersible pump pumping system, ...
[APPLICATION] System and method for optimizing production in an artificially lifted well
US Pat. App 10/770,918 - Filed Feb 3, 2004
2 is illustrated as having a submersible pump 42, a pump intake 44, and an electric
motor 46 that powers submersible pump 32. Motor 46 receives electrical ...

Liquid level detection for artificial lift system control
US Pat. 6516879 - Filed Oct 26, 1998
Electric or hydraulic lines 418 are connected to the prime mover 412 to drive the
... 20 the submersible pump 320 is located at the lower 2s portion of the ...

Method and apparatus for controlling operation of a submersible pump
US Pat. 6254353 - Filed Sep 14, 1999 - General Electric Company
BACKGROUND OF THE INVENTION This invention relates generally to electric motor
... to methods and apparatus for controlling operation of a submersible pump. ...

Liquid level detection for artificial lift system control
US Pat. 5826659 - Filed May 22, 1997
Electric or hydraulic lines 418 are connected to the prime mover 412 to drive the
... Referring to the submersible pump artificial lift system 10 in FIG. ...

SUBMERSIBLE MOTOR SEAL SECTION
US Pat. 3502919 - Filed Jan 2, 1969
There are many uses for submersible motor and pump units such as pumping fluid
from deep oil or water wells. Generally, electric motors having these ...

PORTABLE SUBMERSIBLE PUMP
US Pat. 3785752 - Filed Sep 15, 1971
It is a further object of the present invention to provide a submersible pump
which is not restricted to an electric power source but may utilize as a power ...

COUPLING HEAD ADAPTER
US Pat. 3830955 - Filed Jul 19, 1973
18 and 20 and are advanced to hold the couplings in se- The pump structure ...
sides of the The electric submersible oil well pumps produced by bodies. the ...

Well fishing grapple assembly and method abstract
US Pat. 5361844 - Filed Jun 15, 1993 - Gotco International, Inc.
More specifically, the invention pertains to an assembly and method which 10
offers the capability for retrieval offish, such as electric submersible pumps, ...

Submersible electric motor and electrical connector assembly
US Pat. 4204739 - Filed Nov 13, 1978 - Century Electric Motor Co.
1 is an elevational view of a submersible electric As set forth m US Pat. ...
FIG.l illustrates a typical ground surface. deep well submersible motor-pump ...

High temperature pothead
US Pat. 6910870 - Filed Dec 20, 2002 - Schlumberger Technology Corporation
The pumping system may be an electric submersible pumping system 10. Typically,
the system 10 includes at least a submersible pump 12, such as a centrifugal ...
SUBMERSIBLE PUMP
US Pat. 3788771 - Filed Jul 7, 1972
... 1 2 SUBMERSIBLE PUMP A further object of this invention is to provide a ...
application of the improved submersible pump thereto as well as electric ...

Submersible motor apparatus
US Pat. 4329122 - Filed May 2, 1979 - Hitachi, Ltd.
The submersible pump 50 has a shaft 51 which is connected to the output shaft 112
... port of the pump and a lead wire conductor through which the electric ...

Automatic auxiliary jet sump pump
US Pat. 4060341 - Filed Sep 19, 1975 - Houdaille Industries, Inc.
2; which is disposed a suitable pump driven by an electric FIG. is a sectional
view taken approximately on the motor, for example a submersible type ...

SUBMERSIBLE DOUBLE-ACTING FLUID PISTON DEEP WELL PUMP
US Pat. 2455022 - Filed Aug 8, 1944
(Cl. 103—46) My invention relates to submersible pumps and has particular reference*
to an electric motor driven fluid piston reciprocating insert pump ...

Ground fault detection and protection method for a variable speed ac ...
US Pat. 5945802 - Filed Nov 7, 1997 - General Electric Company
A substantial length of electric wire must be connected to the motor leads ...
No., for supplying power to a submersible pump in a residential water system. ...

[APPLICATION] Oil pumping unit using an electrical submersible pump driven by a circular ...
US Pat. App 11285039 - Filed Nov 23, 2005
Currently available electrical submersible pump uses a rotary motor to rotate a
vane wheel, ... low performance, and high electric energy consumption. ...

[APPLICATION] Sealed ESP Motor System
US Pat. App 10/905,560 - Filed Jan 11, 2005 - SCHLUMBERGER TECHNOLOGY CORPORATION
1, a submersible pumping system, such as an electric submersible pumping system
... includes at least a submersible pump and a submersible sealed motor 14. ...

[APPLICATION] Sealed ESP motor system
US Pat. App 10/321,241 - Filed Dec 17, 2002
1, a submersible pumping system, such as an electric submersible pumping system
... includes at least a submersible pump and a submersible sealed motor 14. ...

SUBMERSIBLE CABLE
US Pat. 3889049 - Filed Jan 14, 1974
10 H2S gas, carbonates, water, salts and large volumes of Submersible ... heat and
pressure to op- electric motor directly coupled to the pump and dis- ...

Submersible electronic drive module
US Pat. 5613844 - Filed Nov 15, 1994 - Walbro Corporation
Objects, features and advantages of this invention are to 60 provide an electronic
drive module for an electric fuel pump that is completely submersible in ...
Device for cable transport
US Pat. 4771699 - Filed Mar 31, 1987 - ITT Flygt AB
1 and 2, a submersible pump or turbine unit 1 is lowered or raised along a vertical
shaft tube 2. An electric cable is connected to the submersible unit ...

Slimbore subsea completion system and method
US Pat. 6227300 - Filed Oct 7, 1998 - FMC Corporation
Electric submersible pump (ESP) equipped HXT wells that cannot produce without
artificial lift have been accepted with an "external" tree cap (which also ...

[APPLICATION] High temperature pothead
US Pat. App 10/324,459 - Filed Dec 20, 2002
The pumping system may be an electric submersible pumping system 10. Typically,
the system 10 includes at least a submersible pump 12, such as a centrifugal ...

Method and apparatus for transmitting information relating to the operation ...
US Pat. 5521592 - Filed Jul 20, 1994 - Schlumberger Technology Corporation
... eg such as a submersible pump for pumping the hydrocarbons coming from the
... Parameters relating to the operation of the pump, or of the electric ...

[APPLICATION] Lubrication system for downhole application
US Pat. App 9/829,248 - Filed Apr 9, 2001
A typical electric submersible pumping system includes various components, such
as a submersible motor, motor protector and a pump, eg a centrifugal pump. ...

Mechanically operated pressure switch having solid state components
US Pat. 4642478 - Filed Jan 3, 1986 - Square D Company
... provide the housing with a the energization of a submersible pump motor. switch
... for a electric motors driving submersible pumps that deliver 15 pump ...

Centrifugal submersible pump
US Pat. 6361272 - Filed Oct 10, 2000
2 is a diagrammatic elevational view of the centrifugal submersible pump of FIG.
... The centrifugal pump configuration has an electric motor driving a ...

PLEDGER
US Pat. 3033125 - Filed Jun 6, 1958 -
1 is a partial longitudinal section of a submersible pump assembly in which ...
The pump shaft 3 is connected to and driven by an electric motor arranged ...

Apparatus for salvaging core laminations
US Pat. 5517750 - Filed Jul 18, 1994 - Submersible Pumps, Inc.
Electric motors typically have stators made of a plurality of annular disks, ...
20 25 About 1974, most of the submersible pump industry switched from the ...

Retrievable progressing cavity pump rotor
US Pat. 5988992 - Filed Mar 26, 1998 - Baker Hughes Incorporated
... a well pump which is operated by a submersible electric motor and having a pump
... submersible pump housing is mounted to the motor and to the tubing. ...
[APPLICATION] Electrical Submersible Pumping Systems Having Stirling Coolers
US Pat. App 11/458,117 - Filed Jul 18, 2006 - SCHLUMBERGER TECHNOLOGY CORPORATION
Additionally, power is supplied to the submersible electric motor via a power cable
... a submersible pump; a gauge disposed proximate the submersible pump; ...

[APPLICATION] Pump controller for submersible turbine pumps
US Pat. App 9965819 - Filed Oct 1, 2001 - VEEDER-ROOT COMPANY
... characteristic is an electric current flowing through the pump motor. 4. ...
A method for controlling each of a plurality of submersible pump motors ...

Method for pumping fluids
US Pat. 7299873 - Filed Mar 11, 2002 - Centriflow LLC
742 (July 1997) and by Sison in "Use of A Motor Cooling By-Pass System in An
Electric Submersible Pump to Increase the Economic Life of Gas Wells", Feb. ...

Isolation container for a downhole electric pump
US Pat. 6568475 - Filed Jun 30, 2000 - Weatherford/Lamb, Inc.
No. to DD Small et al. shows an adjustable length column pipe for connecting a
submersible electric pump in a fuel storage tank to dispenser units. ...

Self-cleaning fluid filter system
US Pat. 6758344 - Filed Feb 21, 2002 - Gordon Construction, Inc.
The filter apparatus 12 encloses a submersible pump 14 in combination with an
electric motor 16. The submersible pump 14 and electric motor 16 are ...

Circulation control device
US Pat. 6497278 - Filed Mar 19, 2001 - Varco I/P
BACKGROUND OF THE INVENTION 10 The use of an electrical submersible pump (ESP)
... chamber 32 with one connection 33 to the electric motor 22 and the other ...

[APPLICATION] Integrated pumping system for use in pumping a variety of fluids
US Pat. App 9/970,337 - Filed Oct 3, 2001
In electric submersible pumping systems, a motor is coupled to a motor protector
and ultimately to a submersible pump, such as a centrifugal pump. ...

Electrical cable for use in extreme environments
US Pat. 4490577 - Filed Apr 14, 1983 - Harvey Hubbell Incorporated
... and the outer cylindrical surface of the underlying pump housing or tubing.
... electric submersible pump housing or other structure to which the cable ...

[APPLICATION] Submersible pump with integrated liquid level sensing and control system
US Pat. App 11/210,340 - Filed Aug 24, 2005
The submersible pump of claim 1 which includes a pair of said electric-field
sensors located at different elevations, the upper sensor producing a signal ...

Submersible pump
US Pat. 4502536 - Filed Apr 28, 1983 - Otis Engineering Corporation
The system of claim 1 or 2 wherein the pump is an electric pump and the electrical
conduit for said pump extends through said other leg of the H-member. 5. ...
Stretching device for electric cables
US Pat. 6386487 - Filed Oct 12, 2000 - ITT Manufacturing Enterprises, Inc.
A submersible pump, which comprises a pump unit and an electric motor unit built
together, is meant to be lowered entirely into the pumped medium within a ...

Insulating fluid system for protecting submersible electric motors from ...
US Pat. 4262226 - Filed Aug 22, 1979 - Kobe, Inc.
SUBMERSIBLE ELECTRIC MOTORS FROM In the event that water should enter the motor,
... The portions of a submersible motor and pump incorporat- efforts of the ...

Variable speed pump-motor assembly for fuel dispensing system
US Pat. 6070760 - Filed May 4, 1999 - FE Petro Inc.
... said controller controlling said adjustable speed of said electric motor in
... submersible fuel pump assembly comprising: a fuel pump; and an electric ...

[APPLICATION] Method for pumping fluids
US Pat. App 9/838,744 - Filed Apr 19, 2001
742 (July 1997) and by Sison in "Use of A Motor Cooling By-Pass System in An
Electric Submersible Pump to Increase the Economic Life of Gas Wells", Feb. ...

[APPLICATION] Method for pumping fluids
US Pat. App 9/838,744 - Filed Apr 19, 2001
742 (July 1997) and by Sison in "Use of A Motor Cooling By-Pass System in An
Electric Submersible Pump to Increase the Economic Life of Gas Wells", Feb. ...

[APPLICATION] Method for pumping fluids
US Pat. App 10/471,462 - Filed Mar 11, 2002
(July 1997) and by Sison in "Use of A Motor Cooling By-Pass System in An Electric
Submersible Pump to Increase the Economic Life of Gas Wells", Feb. ...

Multiple well jet pump apparatus
US Pat. 5555934 - Filed Jun 12, 1995 - R. E. Wright Environmental, Inc.
Electric submersible pumps have similar low flow limits, and they also require
individual motor starters for each pump. They also have another limitation ...

Unitary diversionary-tubing hanger and energizable rod seal
US Pat. 5615736 - Filed Sep 23, 1996
7, wellhead 94 has been completed for reciprocating or 10 rotating rod pump ...
94 which has been completed for electric submersible pump production. ...

Pump
US Pat. 3981628 - Filed Apr 8, 1974
In tanker ships such extra time at 35 submersible electric motor driven ...
this art from the of submersible electric motor driven centrifugal pump fol,owi ...
Method of discharging septic tank filtered effluent
US Pat. 4439323 - Filed May 24, 1982 - Orenco Systems, Inc.
4 illustrates a second embodiment of the invent tion, similar in most respects
to the first embodiment, which employs an electric submersible pump as the ...
Apparatus and method using portable pump
US Pat. 4793386 - Filed Sep 3, 1987 - Sloan Pump Company, Inc.
... of these patents disclose the use of a portable pump, such as a submersible pump,
... However, the portable pump motor could be an electric motor or a ...

Downhole data transmission
US Pat. 6061000 - Filed Feb 3, 1997 - Expro North Sea Limited
... to install an electrically powered submersible pump in a location in the lower
... Apparatus for enabling electric signals to be transmitted between a ...

SUBMERSIBLE ELECTRIC MOTOR
US Pat. 3555319
1 includes an electric motor 10, a pump 11 secured to the lower end of the A
submersible motor of the character disclosed herein is motor 10 and connected ...

FLUID ACTUATED DOUBLE-ACTING SUBMERSIBLE PUMP
US Pat. 2606500 - Filed Jun 24, 1946
In a deep well pumping device of the character described, having a pump ...
power for said electric motor; an operating fluid circulating pump in said ...

[APPLICATION] System of tracking use time for electric motors and other components used in ...
US Pat. App 10068688 - Filed Feb 6, 2002
Generally, the power cable is routed to the electric motor to supply electric
power thereto, and the submersible pump is powered by the motor by way of an ...

Water well pump
US Pat. 7144232 - Filed Dec 2, 2003
Submersible well pumps are used 25 underwater in wells. A small electric motor
may be installed in the well shaft, usually below the pump itself, ...

Rotating cylinder wheel and ball-piston wheel motor, generator, and pump ...
US Pat. 3942913 - Filed Jan 10, 1974
Each cylinder 15 submersible pump without an external driving source. and ...
to which wheel assembly which operates as an electric motor. are attached a ...

Downhole disposal of well produced water using pressurized gas
US Pat. 5857519 - Filed Jul 31, 1997 - Texaco Inc
... to operate both a 10 downhole pump used for injection and lift the desired
petroleum ... progressive cavity pumps), electrical (eg electric submersible ...

Drive assembly with overspeed brake
US Pat. 4993276 - Filed Mar 13, 1987 - Superior Gear Box Company
... electric motor (no{ shown) and the t ble as well as being susceptible to
moisture penetration. connected to a submersible pump of the type system is a ...

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PORTABLE ELECTRIC IMMERSION LIQUID PUMP
US Pat. 3117526 - Filed Nov 21, 1962
An object of the invention is to provide an electric, submersible, portable liquid
pump, specifically including a liquid-tight resin sheathed submersible ...
PUMP OR IMPELLER
US Pat. 1949796 - Filed Apr 12, 1933 - Himmelwerk A
A submersible pump comprising a stationary shaft, the stator of an electromotor
... the pump rotor being fixed to the bottom end of said electric rotor, ...

METHOD AND APPARATUS FOR TRANSFERRING FISH BY PUMPING
US Pat. 3314184 - Filed Sep 8, 1964 -
It will be recognized that the hydraulic motor is per- so haps the ideal means
for driving the submersible pump unit 18 in accordance with this invention, ...

SUBMERSIBLE PUMP
US Pat. 3810718 - Filed Nov 30, 1971 -
The submersible electric motor-pump assembly according to claim 1, wherein said
intermediate connection element forms a counter flange for said flange- like ...

Submersible pump installation, methods and safety system
US Pat. 4529035 - Filed Feb 28, 1983 - Otis Engineering Corporation
IB, 21 and 2J is set by a commercially available electric setting gun and can be
... safety valves to be used with the submersible pump installation. ...

Bottom discharge seal section
US Pat. 7066248 - Filed Jun 11, 2003 - Wood Group ESP, Inc.
The electric submersible pumping system includes a motor assembly, an upper seal
section, a pump assembly and a lower seal section. ...

Self-cleaning fluid filter system
US Pat. 6875364 - Filed Oct 18, 2002 - Gordon Construction, Inc.
The filter apparatus 12 encloses a submersible pump 14 in combination with an
electric motor 16. The submersible pump 14 and electric motor 16 are ...

Shaft locking couplings for submersible pump assemblies
US Pat. 6883604 - Filed Jun 3, 2002 - Baker Hughes Incorporated
The production tubing has incorporated therein an electric submersible pump
assembly, generally shown at. The pump assembly is made up of a series of ...

SCHAEFER SUBMERSIBLE MOTOR CONSTRUCTION F
US Pat. 2829288 - Filed Jul 26, 1954
It will be apparent that with a submersible electric motor of the foregoing ...
in the 30 bottom of a well and are connected to a pump to drive the latter. ...

Coiled tubing strings and installation methods
US Pat. 6192983 - Filed May 28, 1999 - Baker Hughes Incorporated
An electric submersible pump (ESP) is installed in the wellbore to aid the lifting
of the hydrocarbons to the surface when the downhole pressure is not ...

Top entry electrical transmission assembly for submersible pumping
US Pat. 4708201 - Filed Oct 29, 1984
25 submersible pumping unit (not shown) is discharged as DESCRIPTION OF THE ...
and top surface 10 of 40 nected to an electric power receiving cable 80 that ...
Fire extinguishing system for a christmas tree
US Pat. 5031702 - Filed Feb 26, 1990
If desired, a central vertical projection 15 a submersible pump mounted in ...
A fire extinguishing device for a Christmas tree valve electric lead 44 is ...

Subsea pumping module system and installation method
US Pat. 7314084 - Filed Nov 8, 2004 - Petroleo Brasileiro S.A. - Petrobras
The system of claim 1, further comprising an electric submersible pump, said
electric submersible pump being similar to pumps used at the bottom of oil ...

[APPLICATION] Bottom discharge seal section
US Pat. App 10/459,193 - Filed Jun 11, 2003 - Wood Group ESP, Inc.
The electric submersible pumping system includes a motor assembly, an upper seal
section, a pump assembly and a lower seal section. ...

Submersible mixing pump
US Pat. 4747757 - Filed Nov 26, 1986
A submersible pump for operation as a mixer hi a tank or liquid reservoir ...
comprising: an electric motor including a stator and a rotor rota- tionally ...

Motor bearing with rotatable guide
US Pat. 5321328 - Filed Sep 9, 1993
... to submersible pump 10 between the slot teeth of the stator laminations. ...
to drive the „ elongated electric motor constructed with a stator of pump. ...

SUBMERSIBLE MOTOR
US Pat. 2845551 - Filed Oct 4, 1955 - Westinghouse Electric Corporation
This is impossible with a deep-well pump of any other type. ... of the invention
is to provide a submersible electric motor of novel construction capable of ...

ENCASED ELECTRIC PUMP
US Pat. 3479960 - Filed Dec 26, 1967 - Magnesita S
103—117 3 Claims ABSTRACT OF THE DISCLOSURE 10 An electric motor driven gear pump
... FIGURE 9 is a side elevation, partly in section, of a submersible pump ...

[APPLICATION] Novel completion method for rigless intervention where power cable is ...
US Pat. App 9969230 - Filed Oct 1, 2001
A well pump apparatus, comprising: a submersible pump assembly having a pump, an
electric motor, and an electrical receptacle assembly, the pump and motor ...

Tension thrust ESPCP system
US Pat. 6868912 - Filed Feb 19, 2003 - Baker Hughes Incorporated
A submersible pump assembly, comprising: a progressing cavity pump stator; a pump
assembly housing surrounding the pump stator; an electric motor assembly

SUBMERSIBLE PUMP ASSEMBLY
US Pat. 2577559 - Filed Jul 1, 1948
Among the objects of our invention are: vention, the submersible pump assembly
comprises a pump unit 1 7 driven by an electric motor 19. ...
Electric motor with shaft bearing having alignment feature
US Pat. 5455471 - Filed Aug 19, 1994 - Magnetek Universal Electric
1 is a sectional view in side elevation of a submersible pump that embodies an
electric motor in accordance with a presently preferred implementation of the ...

Submersible canned motor transfer pump
US Pat. 5659214 - Filed Mar 3, 1995 - Westinghouse Electric Corporation
A submersible motor transfer pump of claim 2. wherein said liquid flow means
comprises jacket means concentrically arranged at least around said electric ...

Apparatus for cleaning sewers
US Pat. 5068940 - Filed Nov 1, 1990 - Ray Harvey Company, Inc.
The apparatus of claim 6, wherein the submersible pump drive is electric. 8.
The apparatus of claim 6, wherein the submersible pump drive is hydraulic. 9. ...

BEARING ARRANGEMENT FOR ELECTRIC MOTORS
US Pat. 3506861 - Filed Aug 22, 1966 - Borg
310—90 5 Claims ABSTRACT OF THE DISCLOSURE 10 An elongated electric motor ...
In a typical submersible deep well pump, drive shaft rotation is provided by ...

Float switch assembly
US Pat. RE34175 - Filed Nov 15, 1991
BACKGROUND OF THE INVENTION In the art of controlling a submersible pump with a
... its support and electric pump motor which can be controlled directly use ...

Submersible pump
US Pat. 5061157 - Filed Sep 18, 1990 - Ebara Corporation
... 1 or further into the motor case, so that electric leakage can surely be avoided.
... 65 The process of assembling this submersible pump is as follows: ...

Heat conducting filler material for motor-containing devices
US Pat. 4191240 - Filed Apr 4, 1977
Numerous devices are known that utilize electric motors to produce useful ...
1 is a side view, partly in section, showing a submersible pump 10 of the type ...

SUBMERSIBLE MOTOR WITH DETACHABLE CAPACITOR AND HOUSING
US Pat. 3248582 - Filed Apr 3, 1963 - Red Jacket Manufacturing Company
(Cl. 310—87) This invention relates to submersible electric motors for use in wells,
... The drop pipe 14 extends downwardly in the casing to the pump ...

BACKGROUND OF
US Pat. 3764233
With such an arrangement propellers on the is mounted within the casing 12 for
driving the pump submersible were driven directly by electric motors. ...

SUBMERSIBLE MOTOR
US Pat. 2404783 - Filed Aug 1, 1944 - Byron Jackson Co
(Cl. 103— 87) This invention relates to submersible electric motors and more
particularly to combined motor and pump units, although certain features of the ...

Motor control system and components thereof
US Pat. 5130616 - Filed Nov 13, 1990 - Southwest Electric Company
Submersible pumps are used, for example, in oil wells at remote locations. ...
such as a three-phase electric motor driving a submersible pump. ...

SUBMERSIBLE SUMP PUMP
US Pat. 2918016 - Filed Sep 24, 1956 - Swaby Manu
1 is a side elevational view of my submersible sump pump iu operating position
... A suitable electric motor is carried within a motor housing 23 within the ...

Variable speed pump-motor assembly for fuel dispensing system
US Pat. 5769134 - Filed Aug 19, 1997 - Fe Petro Inc.
... a submersible fuel pump assembly that pumps fuel from said underground fuel
... submersible fuel pump assembly comprising: a fuel pump; and an electric ...

Tubing containing electrical wiring insert
US Pat. 6666274 - Filed May 15, 2002 - Sunstone Corporation
Pumping mechanisms such as electrical submersible pumps (ESP) and ... provide power
to the pump from the outside of the tubing to the inside of the tubing. ...

SUBMERSIBLE MOTOR AND BEARING ARRANGEMENT
US Pat. 3551714 - Filed Dec 30, 1968
1 is a fragmentary view of an elongated electric motor motor stator and the ...
2 is an enlarged view of a portion of the apparatus of submersible pump ...

BOYD SUBMERSIBLE MOTOR SEAL SECTION
US Pat. RE26783 - Filed Dec 26, 1962 - Berg
A further object of this invention is to provide a novel arrangement of a seal
section for submersible electric motor and pump unit wherein an intermediate ...

Submersible sump pump
US Pat. 4396353 - Filed Apr 13, 1981 - Flint & Walling, Inc.
In a submersible sump pump having a housing enclosing an electric motor and an
impeller rotatably driven thereby within a volute defined by a portion of 55 ...

[APPLICATION] Technique for providing power to a completion used in a subterranean environment
US Pat. App 10068076 - Filed Feb 6, 2002
Exemplary components of such a system comprise a submersible pump 38, a pump ...
a conventional electric submersible pumping system power cable splice, ...

Subsea connection apparatus
US Pat. 6408947 - Filed Oct 9, 2000 - FMC Corporation
Electric submersible pump (ESP) equipped HXT wells that cannot produce without
artificial lift have been accepted with an "external" ...
Unitary bearing member and motor incorporating the same
US Pat. 4768888 - Filed Apr 29, 1987 - McNeil (Ohio) Corporation
... to electric tion to provide a bearing assembly for a submersible motors. ...
as above, which accurately bers for use in submersible pump motors. ...

CARLE CENTRIFUGAL GAS SEPARATOR
US Pat. 3300950 - Filed Feb 12, 1963 - the assignee of the present application and now abandoned
In a submersible pump it is common .practice to provide an electric motor for
driving a pump with a seal and gas separator interposed therebetween, ...

Low well yield control system
US Pat. 4028011 - Filed Sep 3, 1975
The pump is removed from the well, despite the operation motor of submersible
electric pump 22 operates at a of the pump at its constant pumping rate, ...

DEEP WELL SUBMERSIBLE PUMPING UNIT
US Pat. 3091181 - Filed Feb 23, 1962 -
In a deep well submersible pump unit, an elongated housing adapted to be ...
pump mounted in the lower portion of the housing, and an electric motor mounted ...

Submersible pump system
US Pat. 6682309 - Filed Jan 22, 2002
... a pump having a centrifugal impeller driven by an electric motor, ... No.
describes a horizontally mounted submersible pump assembly for pumping water ...

ESP pump for gassy wells
US Pat. 6668925 - Filed Feb 1, 2002 - Baker Hughes Incorporated
... the gas separator is below and spaced away from the submersible pump assembly.
... a submersible pump assembly, which comprises a pump and an electric ...

Submersible pump interconnection assembly
US Pat. 3980369 - Filed Dec 15, 1975 - International Telephone and Telegraph Corporation
United States Patent Panek [54] SUBMERSIBLE PUMP INTERCONNECTION ASSEMBLY [75]
Inventor: ... A plurality of electric conductors are disposed in side-by-side ...

Fuel pump and fuel filter for a marine installation
US Pat. 5231967 - Filed Dec 16, 1991 - Outboard Marine Corporation
A marine propulsion device as set forth in claim 3 25 wherein said electric pump
is non-submersible.. A marine propulsion device comprising a drive unit ...

[APPLICATION] Fuel transfer pump
US Pat. App 10/260,760 - Filed Sep 30, 2002
A pressure pump is commonly referred to as a submersible pump. The pump and
electric motor are located inside the bottom of the fuel tank submerged in the ...

Natural energy operated pump system
US Pat. 4303833 - Filed Jul 7, 1980 - A. Y. McDonald Manufacturing Company
... electric pump systems disposed at the capacity. bottom of the well for ...
a standard one horse- 45 ^u^- power submersible pump to perform the entire ...
Flexible production tubing
US Pat. 4336415 - Filed Jul 21, 1980
According to conventional practice, the submersible This application is a ...
sucker rod approach. pump which is driven down hole by an electrical, hy- 1. ...

Combination gear drive with improved clutch assembly
US Pat. 4676352 - Filed Mar 15, 1985
In operation, an electric motor 2 is mounted on the motor stand 37 and connected
... for example, a driven submersible pump located within a well 45 hole. ...

Modular island drilling system
US Pat. 4511288 - Filed Nov 22, 1982 - Global Marine Inc.
... 98 to the re- Portable electric submersible pumps 100, preferably 30 spective
... of a submersible pump 100 via connections valves and connections 97, ...

Monitoring of downhole parameters and tools utilizing fiber optics
US Pat. 6268911 - Filed May 1, 1998 - Baker Hughes Incorporated
... well 702 that preferably has two electric submersible pumps ("ESP") 714, ...
703 and the other to pump any separated water back into a 15 formation. ...

Electric aquarium cleaning apparatus
US Pat. 6444120 - Filed Jun 1, 2001
1 is a side view of a new electric aquarium cleaning apparatus submerged in a
... The pump assembly 16 is fully submersible such that the pump assembly 16 ...

Antique lawn pump mobile
US Pat. 4413778 - Filed May 17, 1982
A submersible electric pump 12 is provided in tank i to pump liquid contained
therein via pipe 13 to spout 5 and hence into container 6. ...

SERIES-PARALLEL SUBMERSIBLE PUMP
US Pat. 2204857 - Filed Jun 13, 1938 - Byron Jackson Co
In making deep water well pump installations it 3 is customary to select the size
of pump on a ... a lower group 4, and a submersible electric motor 5. ...

Monitoring of downhole parameters and tools utilizing fiber optics
US Pat. 6281489 - Filed May 1, 1998 - Baker Hughes Incorporated
... electric submersible pumps ("ESP") 214 one for pumping the oil/gas 206 the
surface 203 and the other to pump any separated water back into a formation. ...

Electro-hydraulic well tool actuator
US Pat. 6012518 - Filed Jun 5, 1998 - Camco International Inc.
Another feature of the present invention is that the downhole well tool is an
electric submersible pump. BRIEF DESCRIPTION OF THE DRAWINGS FIGS. ...
Connector system for use with electrically operable pumps
US Pat. 5071370 - Filed Dec 4, 1990 - Metropolitan Pump Company
BACKGROUND OF THE INVENTION 20 30 Submersible pumps are known for use in ...
such as an electric pump, to a source of electrical energy provides for ease ...
ELECTRICAL CABLE
US Pat. 3710009 - Filed Dec 16, 1971
... electric motor directly coupled to the pump and 10 corrosion of the armor,
... Since the cable is normally tion to provide a cable for a submersible ...

FIG-II
US Pat. 2919357 - Filed Jul 18, 1957 - the same assignee as this application
1 is an elevational view illustrating a submersible pump assembly incorporating
an electric motor constructed in accordance with the invention; 15 Fig. ...

Method of reclaiming electric motor laminations
US Pat. 4508583 - Filed May 23, 1984 - Hughes Tool Company
Field of the Invention This invention relates in general to a method of re-
claiming electric motor laminations, particularly for submersible pump motors ...

Vertical configured pump
US Pat. 5951248 - Filed Aug 8, 1997 - Baker Hughes Incorporated
The pump is driven by a downhole electric motor. Electrical submersible pumps
are also used on the surface for injecting water into wells for pressure ...

Submersible pump discharge head
US Pat. 4406582 - Filed May 19, 1981 - Marley-Wylain Company
... causing an electric current to flow which eroded the heads and the pipes. ...
1 is a cross section of the pump section of a submersible pump employing a ...

STARTING SWITCH FOR SUBMERSIBLE PUMPS K
US Pat. 2997609 - Filed Jul 25, 1957 - The Tait Manufacturing Company
The invention has special relation to electric motors for use in such submersible
pump assemblies and which are intended to be filled with liquid during ...

System and method for optimizing production in an artificially lifted well
US Pat. 7114557 - Filed Feb 3, 2004 - Schlumberger Technology Corporation
An artificial lift system, such as an electric submersible pumping system ...
11 is a graphical representation of above the pump 10 calculations used in the ...

[APPLICATION] System for use in a subterranean environment to vent gas for improved ...
US Pat. App 9/766,739 - Filed Jan 22, 2001
[0015] Exemplary bottom intake ESP system comprises a submersible pump powered
by an electric submersible motor. In this application, an additional motor is ...

CONNECTING FLANGE ARRANGEMENT OF SUBMERSIBLE PUMP FOR FIXED DISCHARGE OUTLET
US Pat. 3771914 - Filed May 8, 1972 -
7 is a partial sectional view of another construc- SUBMERSIBLE PUMP FOR FIXED
... Thus, table pump 10 is provided with a sealed electric motor adjusts the ...
Method for boosting the output voltage of a variable frequency drive
US Pat. 6586900 - Filed May 11, 2001 - Baker Hughes Incorporated
8, 1999 entitled ELECTRICAL SUBMERSIBLE PUMP AND METHODS ... There is, therefore,
a need in the art for a system allowing an electric drive having a maximum ...
Progressive production methods and system
US Pat. 6508308 - Filed Sep 26, 2000 - Baker Hughes Incorporated
The production assembly of claim wherein the second fluid pump further comprises
an electric submersible pump. 13. The production assembly of claim 8 ...

Roll-formed submersible pump
US Pat. 4708589 - Filed Sep 22, 1986 - The Marley-Wylain Company
Field of the Invention This invention relates to a submersible pump assembly ...
latter of which is also secured to a shell of an adjacent electric motor. ...

Apparatus for the removal of gases, especially air, in fluids
US Pat. 4242289 - Filed May 15, 1979
Particularly favorable construction, the device A further object of this invention
is the provision of a comprises a submersible electric motor-pump ...

Mechanically operated pressure switch having solid state components
US Pat. 4998097 - Filed Dec 17, 1985 - Square D Company
... components for controlling the energization of a submersible pump motor. ...
to control the energization of electric motors driving submersible pumps ...

PORTABLE WASHING UNIT FOR TANKS
US Pat. 3130676 - Filed Aug 8, 1961 - Golay and Co
... an electric motor driven submersible pump, a standpipe to which the pump
delivers, and a spray nozzle on the upper end of the standpipe. ...

Fuel transfer pump
US Pat. 7097433 - Filed Sep 30, 2002
The pump and interferes with the magnetic motor, electric motor are located inside
the bottom of the fuel tank submerged in the fuel itself. The submersible ...

CONTROL SYSTEM FOR POWER UNITS SUCH AS ELECTRIC MOTORS AND THE LIKE
US Pat. 3283236 - Filed Sep 30, 1965 - Borg
One type of device used in the production of oil is a submersible pump having,
... This may be an electric motor, for example, of the type using three-phase ...

System for, and a method of pumping fluids from a well
US Pat. 6840324 - Filed Dec 26, 2001
... deep wells to use submersible pumps which are driven by submersible pump motors.
.... to a power source to be separately supplied with electric power. ...

PUMP-MOTOR STRUCTURES AND ASSEMBLY METHOD
US Pat. 3180267 - Filed Jun 11, 1962
In the drawings: FIGURE 1 provides an end view of assembly of submersible gasoline
pump and electric motor structure utilizing a printed circuit end plate ...

SUBMERSIBLE AUTOMATIC BILGE PUMP
US Pat. 2669934 - Filed Mar 12, 1952
In a submersible automatic bilge pump, an open casing having a top plate, ...
in the dome above the top plate for housing an electric switch; an electric ...
PRESSURE SWITCH FOR A SUMP PUMP
US Pat. 3916130 - Filed Mar 29, 1974 - Houdaille Industries
1 is a semi-diagrammatic view of a submersible The invention is directed to a
... to the drawings and more particularly to electric motor of the pump when ...

Portable battery powered sprayer
US Pat. 4801088 - Filed Jun 8, 1987
Mounted within pipe 22 is a submersible electric pump 28 having an intake 30
projecting below the lower end of pipe 22 at a location immersed within the ...

Variable speed pump-motor assembly for fuel dispensing system
US Pat. 5934508 - Filed May 28, 1998 - FE Petro Inc.
... AC-to-DC converter and said electric motor that converts said DC voltage ...
submersible fuel pump assembly comprising: a fuel pump; and an electric ...

SUBSEA PRODUCTION SYSTEM
US Pat. 3621911 - Filed Apr 1, 1969
A submersible pump in each 264 in the submersible vehicle 184 through portholes
266 tank can pump out the treating fluid as necessary The submer- while the ...

SUBMERSIBLE PUMPING UNIT
US Pat. 3907463 - Filed Jul 5, 1973
10 and showing wells, usually are driven by an electric motor which, ... 3 pumping
unit ground-level pump. 15 suspended horizontally from ground level at a ...

Flexible production tubing
US Pat. 4374530 - Filed Feb 1, 1982
When such fluid power to a subsurface pump. In the subsurface- workover ...
A related object of the invention is to provide a flexi- Submersible pumps of ...

Jet electric pump
US Pat. 4381175 - Filed Sep 11, 1980 - Kobe, Inc.
The high pressure centrifugal pump comprises a plurality of pump stages powered
by a submersible downhole electric motor. To permit the high pressure ...

System and method for separately producing water and oil from a reservoir
US Pat. 6415864 - Filed Nov 30, 2000 - Schlumberger Technology Corporation
The pump speed of either or both electric submersible pumping systems 44 and 48
may be adjusted to control one or both of the oil and water production rates ...

Pressure-monitoring system
US Pat. 4658986 - Filed Jul 11, 1985
Suitably, it in- mended even though commonly a submersible pump eludes various
conventional integrated circuits includ- has an internal check valve. ...

PROTECTING UNIT FOR AN OIL FIELD SUBMERSIBLE MOTOR
US Pat. 3571636
A partition member 28 includes on the lower end thereof a pump and having ...
having male from directly entering into the interior of the electric motor. on ...
Submersible pump
US Pat. 4588353 - Filed May 18, 1984 - Ebara Corporation
other embodiment of the submersible pump, pump but may not be easily discharged
... an electric power source. Also, at the portion face of the intermediate ...

Sewage effluent volume control and alarm arrangement for pressurized sewage ...
US Pat. 4230578 - Filed Apr 9, 1979 - Jet, Inc.
The pump is driven by a submersible electric Motor M. It is to be understood that
just a single disposal field may be provided, in which case the ...

SUBMERSIBLE PUMP ASSEMBLAGE
US Pat. 3515495 - Filed Feb 27, 1968
United States Patent O ce SUBMERSIBLE PUMP ASSEMBLAGE Albert Blum, ... a submersible
pump assemblage is there shown as including an electric motor or pump ...

High pressure seal
US Pat. 5920035 - Filed Mar 12, 1997 - ATP International Ltd.
SUMMARY According to the present invention there is provided an apparatus for
treating water from a water supply comprising: a submersible electric device ...

Deep well submersible pump
US Pat. 6579077 - Filed Dec 27, 2001 - Emerson Electric Company
Some pump designs have also employed 25 electric motors that operate at greater
... SUMMARY OF THE INVENTION The deep well submersible pump of the invention ...

Oil-water interface control for submersible electric motor
US Pat. 4040773 - Filed Nov 24, 1975 - Borg-Warner Corporation
The pump 42 continuously operates; when the valve 44 is closed or ... with a
submersible electric motor which drives a submersible pump comprising: a ...

Centrifugal pump
US Pat. 4511307 - Filed Sep 2, 1983 - Dresser Industries, Inc.
30 Manifestly, the prolongation of the life of a submersible pump is of ...
to an submersible electric motor (not shown) for driving the pump 10 while the ...

Completion system
US Pat. 6039119 - Filed Jul 12, 1996 - Cooper Cameron Corporation
The Nordic Council of Ministers Program for Petroleum Technology; Electric
Submersible Pump for Subsea Completed Wells; Nov. 26-27, 1991; S. Sangesland; (p. ...

RESILIENT COUPLING
US Pat. 2765638 - Filed Jun 25, 1954
In the usual small size submersible pump unit, the electric motor is of the single
phase type. As is well known, the shaft torque of a single phase motor is ...

Stage pump having composite components
US Pat. 6979174 - Filed Oct 1, 2003 - Schlumberger Technology Corporation
A centrifugal pump is connected into an electric submersible pumping system
located, for 10 example, in a wellbore drilled into an oil-producing formation. ...
Biocide impregnation of coatings for ESP components
US Pat. 7144549 - Filed Oct 16, 2003 - Baker Hughes Incorporated
Technical Field The present invention generally relates to bacterial corrosion
protection in electric submersible pump (ESP) industry. ...

[APPLICATION] Biocide impregnation of coatings for ESP components
US Pat. App 10/016,393 - Filed Dec 10, 2001
Technical Field [0002] The present invention generally relates to bacterial
corrosion protection in electric submersible pump (ESP) industry. ...

[APPLICATION] Motor Protector
US Pat. App 10/708,470 - Filed Mar 5, 2004 - SCHLUMBERGER TECHNOLOGY CORPORATION
Although electric submersible pumping systems can utilize a wide variety of
components, examples of basic components comprise a submersible pump, ...

[APPLICATION] U.S. Patent 10227531
US Pat. App 10/227,531 - Filed Aug 26, 2002
[0011] Electric submersible pumps (ESP) include a down- hole electric motor that
rotates an impeller (or impellers) in the pump, thereby generating pressure ...

Liquid level detection for artificial lift system control
US Pat. 5634522 - Filed May 31, 1996
Electric or hydraulic lines 418 are connected to the prime As ... 20 the submersible
pump 320 is located at the lower will perform best on wells with ...

[APPLICATION] System and Method for a Combined Submersible Motor and Protector
US Pat. App 10711631 - Filed Sep 29, 2004 - SCHLUMBERGER TECHNOLOGY CORPORATION
[0027] Electric submersible pumping system 22 comprises a submersible pump 36
coupled to deployment system 26 by a connector 38. ...

[APPLICATION] Three phase downhole separator process
US Pat. App 11/825,369 - Filed Jul 6, 2007
1 entitled "Three Phase Downhole Separator Process-ESP," shows the process wherein
oil, gas, and water are separated downhole with electric submersible pump ...

Three phase downhole separator process
US Pat. 7255167 - Filed May 31, 2005
This drawing shows the process 40 wherein oil, gas, and water are separated
downhole with electric submersible pump (ESP). Other types of pumps may also ...

Variable frequency power system and method of use
US Pat. 7170262 - Filed Dec 24, 2003 - Foundation Enterprises Ltd.
The electric submersible pump is driven by alternating current (AC) three ...
In the case of electric submersible pumps, current draw and pump operating ...

Liquid-tight electrical entry system with integral ground tab, particular to ...
US Pat. 6899532 - Filed Apr 5, 2002 - ITT Manufacturing Enterprises, Inc.
1 is a cut away view of a submersible pump with a cord grip type of a prior art
... to the motor chamber 64 to energize the pump's electric motor 65 or the ...
[APPLICATION] Liquid-tight electrical entry system with integral ground tab, particular to ...
US Pat. App 10/117,790 - Filed Apr 5, 2002
[0006] In order to effectively operate a submersible pump in or near the pumpage,
liquid tight access for the passage of electric power and accessory cables ...

FIGURE
US Pat. 3162737 - Filed Apr 16, 1962
It is well known to provide submersible, electric motor driven sump and ...
are housed within or attached to the submersible pump housing or are mounted on ...

Protector for electrical submersible pumps
US Pat. 7217107 - Filed Apr 22, 2005 - Schlumberger Technology Corporation
Atypical submersible pumping system comprises several components, such as a
submersible electric motor that 40 supplies energy to a submersible pump. ...

[APPLICATION] Providing A String Having An Electric Pump And An Inductive Coupler
US Pat. App 11746967 - Filed May 10, 2007 - SCHLUMBERGER TECHNOLOGY CORPORATION
1, where the production string includes an electric submersible pump (ESP).
[0010] FIG. 5 illustrates another completion system having a production string ...

[APPLICATION] PROTECTOR FOR ELECTRICAL SUBMERSIBLE PUMPS
US Pat. App 11/733,511 - Filed Apr 10, 2007 - SCHLUMBERGER TECHNOLOGY CORPORATION
Different types of submersible pumping systems may be disposed in production ...
as a submersible electric motor that supplies energy to a submersible pump. ...

[APPLICATION] Protector for Electrical Submersible Pumps
US Pat. App 10/907,976 - Filed Apr 22, 2005 - SCHLUMBERGER TECHNOLOGY CORPORATION
[0005] A typical submersible pumping system comprises several components, such
as a submersible electric motor that supplies energy to a submersible pump. ...

[APPLICATION] Systems and Methods for Power Ride-Through in Variable Speed Drives
US Pat. App 11/463,836 - Filed Aug 10, 2006
1 is a diagram illustrating an electric submersible pump and control system ...
[0024] In one embodiment, an electric submersible pump is controlled using ...

Multi-string production packer and method of using the same
US Pat. 7216720 - Filed Aug 5, 2004
The pump cable pack-off tubing 7 allows the pump cable to be installed through
the packer down to an electric submersible pump (shown in FIG. ...

[APPLICATION] System and Method for Protecting a Submersible Motor
US Pat. App 11308447 - Filed Mar 27, 2006 - SCHLUMBERGER TECHNOLOGY CORPORATION
One type of artificial lift system is an electric submersible pumping system in
which a submersible motor drives a submersible pump to produce well fluid to ...

Carbon dioxide pump and pumping system
US Pat. 6224355 - Filed Apr 20, 1999 - Occidental Permian Ltd.
Among other advantages, the use of an electric submersible pump does not require
the use of mechanical seals or their associated seal oil systems. FIG. ...
Integrated subsea power pack for drilling and production
US Pat. 7011152 - Filed Feb 7, 2003 - Vetco Aibel AS
The method for supplying power according to claim 1, wherein: step (f) comprises
the step of installing an electric submersible pump in the well; ...

Method for constructing a liquid-impervious electric motor assembly
US Pat. 5853643 - Filed Jul 19, 1996
These types of pumps typically comprise an electric motor which is enclosed ...
50 A form of submersible pump is known wherein the motor housing is formed ...

[APPLICATION] Pressurized bearing system for submersible motor
US Pat. App 11203838 - Filed Aug 15, 2005 -
BACKGROUND OF THE INVENTION [0002] A conventional, electric, submersible pump (ESP)
assembly includes an electrical motor and a rotary pump that is used to ...

GAS SEPARATOR FOR A SUBMERSIBLE OIL PUMP
US Pat. 3624822 - Filed Apr 17, 1970
A plurality larly to a gas separator for use with a submersible pump for oil ' °f
... nested cylindrical cup members 40A, an electric driving motor. ...

[APPLICATION] Polymeric Composites, Oilfield Elements Comprising Same, and Methods of ...
US Pat. App 11306119 - Filed Dec 16, 2005 - SCHLUMBERGER TECHNOLOGY CORPORATION
The method of claim 21 wherein the oilfield element is selected from tubing,
jointed pipe, sucker rods, electric submersible pumps, submersible pump motor ...

CONERY
US Pat. 2740059 - Filed Aug 13, 1952 - The F
In connection with submersible pumps, such as water pumps, the electric drive
motor is positioned underneath the pump at the bottom of the drop pipe in the ...

Portable toilet with improved flush apparatus
US Pat. 4185337 - Filed Sep 26, 1978 - Thetford Corporation
5 The submersible pump 40 has four legs 60, only two of which are shown in FIG.
2, for supporting the submersible pump 40 on the bottom wall 20. ...

Technique for protecting a submersible motor
US Pat. 6666664 - Filed Feb 15, 2002 - Schlumberger Technology Corporation
For example a 15 variety of electric submersible pumping systems are used in
wellbores to pump petroleum-based fluids. In a typical system, a pump is ...

[APPLICATION] System and Method for Real-Time Monitoring and Failure Prediction of ...
US Pat. App 11/308,420 - Filed Mar 23, 2006 - SCHLUMBERGER TECHNOLOGY CORPORATION
The motor section 11-5 includes an electric motor assembly that is driven ...
which is disposed on the bottom end of the electrical submersible pump system ...

Emergency sump pump and alarm warning system
US Pat. 4456432 - Filed Mar 1, 1983 - Jennings Pump Company
... current electric motor mounted adjacent to said submersible primary pump means,
... current electric motor drives submersible said primary pump means; ...
Method and system for controlling a mechanical pump to monitor and optimize ...
US Pat. 5063775 - Filed Mar 16, 1990
A second type of downhole pump which is currently 35 used on a small percentage
of US and foreign wells is the "electric submersible pump". ...

Field configurable modular motor
US Pat. 6700252 - Filed Dec 21, 2000 - Schlumberger Technology Corp.
The submersible pumping system includes a submersible electric motor and a
submersible pump. The submersible electric motor has a plurality of 55 motor ...

Arcuate armored cable
US Pat. 4454378 - Filed Dec 8, 1982 - Harvey Hubbell Incorporated
... cable for 5 supplying electrical power to submersible oil well pumps. ...
electric submersible pump housing or other structure to which the cable is ...

Submersible thrust limit switch
US Pat. 4057365 - Filed Apr 12, 1976
Heretofore, the submersible protection did not pump ^.g structurally securely
... Objects of this Invention 20 fails, not only will the electric motor shaft ...

Well pumping method and apparatus
US Pat. 4830113 - Filed Nov 20, 1987 - Skinny Lift, Inc.
The strainer attaches to a 40 submersible pump 46, which is driven by a ...
a relatively small (1-10 HP) Franklin electric motor especially designed 45 for ...

Wellhead junction system
US Pat. 5722844 - Filed Apr 4, 1996
The electric submersible generally along line 10—10 in FIG. 9. pump can operate
on, for example, three-phase, alternat- FIG. 11 is a vertical, ...

SUBMERSIBLE PUMP MOTOR
US Pat. 1768902 - Filed Jul 30, 1928
... OP BERLIN, GERMANY, ASSIGNORS TO WESTINGHOUSE ELECTRIC AND MANUFACTURING
COMPANY, A CORPORATION OP PENNSYLVANIA SUBMERSIBLE PUMP MOTOR Application filed ...

Method and apparatus for de-icing oilwells
US Pat. 6260615 - Filed Jun 25, 1999 - Baker Hughes Incorporated
1, 2a and 2b, the submersible pump assembly includes an electrical motor 19 ...
preferably steel, that is wrapped as in conventional electric power cable ...

Submersible motor protection apparatus
US Pat. 5367214 - Filed Nov 18, 1992
Protective devices for fluid-filled submersible electric motors have been employed
since the inception of submersible pump assemblies. ...

Well pump puller
US Pat. 5848641 - Filed Nov 14, 1996
Typically, a submersible pump is then threaded down ^ motion, ... we bores can
be hundreds of feet The drive means includes an electric motor which is deep, ...
Method and system for controlling a mechanical pump to monitor and optimize ...
US Pat. 5222867 - Filed Oct 15, 1991
For the purpose of this discussion it will be the "electric submersible pump".
This pump consists of assumed that all transported solid contaminants remain ...

Continuous pressure and temperature readout for submersible pumps
US Pat. 4477230 - Filed Sep 30, 1982 - Hughes Tool Company
The submersible pump installations concerned herein ^ FIG. 3 is a schematic
illustrating another portion of include a large electric motor located in the ...

Apparatus for raising and lowering boats
US Pat. 6076478 - Filed Feb 19, 1998
These are preferably inexpensive electric submersible pumps that are available
in several ... where a submersible pump is provided for each compartment. ...

Portable pump
US Pat. 6146108 - Filed Apr 30, 1999
Portable pumps have been provided both as submersible pumps and pumps in which
neither ... An electric water pump is operatively connected to the battery. ...

Device for switching a submersible motor-driven pump on and off
US Pat. 5466127 - Filed Sep 20, 1993 - WILO GmbH
More particularly, the submersible pump of the invention can comprise: a pump
... in which the pump is submerged from the intake to the outlet; an electric ...

Method and system for controlling a mechanical pump to monitor and optimize ...
US Pat. 5006044 - Filed Nov 2, 1989
A second type of downhole pump which is currently 35 used on a small percentage
of US and foreign wells is the "electric submersible pump". ...

SUBMERSIBLE DYNAMO ELECTRIC MACHINE
US Pat. 2883566 - Filed Oct 27, 1955 - American Machine a Foundry Co
It is therefore an object of this invention to provide a submersible pump motor
which eliminates the need of a separate casing surrounding the motor. ...

Electrical connector for submersible oil well pump cables
US Pat. 4073559 - Filed Jun 20, 1977
A disconnectable connector for electric power cable of the type having insulated
conductors, a jacket, and metallic outer armor, comprising: a first shell ...

Production system and method for producing fluids from a well
US Pat. 6497287 - Filed Jun 7, 2000 - The Board of Regents, The University of Texas System
Sachdeva et al., "Performance of Electric Submersible Pumps in Gassy Wells," ...
The production system may include a submersible pump and a jet pump. ...

Dual injection and lifting system using a rod driven progressive cavity pump ...
US Pat. 6079491 - Filed Sep 17, 1998 - Texaco Inc.
For example, a typical electrical-powered submersible centrifugal pump is from
... or very heavy crude oil where more delicate electric pump impellers, ...
[APPLICATION] Motor cooler for submersible pump
US Pat. App 10965019 - Filed Oct 14, 2004 -
Electrical submersible pump (ESP) systems have been found to meet this need.
The electric motor that is typically used in such systems generates ...

SUBMERSIBLE PUMP FOR A WELL CASING
US Pat. 3437046 - Filed Aug 31, 1967
In a submersible motor-pump assembly adapted to be 30 Description of the preferred
embodiment lowered into a well casing, if the elongated electric motor ...

Portable self-contained ground water testing assembly
US Pat. 5275198 - Filed Dec 30, 1992
The submersible pump 50 is supplied with power by a set of 10 insulated electrical
... with valves 72 that are opened or closed by electric solenoids 73. ...

Control system for centrifugal pumps
US Pat. 7117120 - Filed Sep 5, 2003 - Unico, Inc.
A centrifugal pump of the type known as an electric submersible pump (ESP) 32 is
mounted at the lower end of the tube 38 and includes one or more ...

[APPLICATION] System and method for removing solid particulates from a pumped wellbore fluid
US Pat. App 10155779 - Filed May 24, 2002
[0003] One exemplary submersible pumping system is an electric submersible pumping
system that utilizes a submersible electric motor and a submersible pump. ...

[APPLICATION] Control system for centrifugal pumps
US Pat. App 11502677 - Filed Aug 10, 2006
[0041] A centrifugal pump of the type known as an electric submersible pump (ESP)
32 is mounted at the lower end of the tube 38 and includes one or more ...

Lead sheathed power cable
US Pat. 4780574 - Filed Apr 16, 1987 - Hubbell Incorporated
... the tube Electric submersible pumps are often used in the 10 outer surface
being inwardly spaced from the armor chemical industry to pump large ...

Electric power supply connection for submersible capacitor-start motor apparatus
US Pat. 4546300 - Filed Mar 17, 1983 - A. O. Smith Corporation
ELECTRIC POWER SUPPLY CONNECTION FOR The opening of the contacts results in arcing
... Conventionally, 35 operating characteristics, submersible pump motor ...

Submersible pump protection for hostile environments
US Pat. 5134328 - Filed Apr 4, 1991 - Baker Hughes Incorporated
However, not only the actual pump itself but the motor driving a submersible pump
is exposed to the turbulent corrosive and/or abrasive and erosive liquid ...

ELECTRIC MOTOR PUMP OF THE SUBMERSIBLE TYPE
US Pat. 2568548 - Filed Apr 1, 1946
A submersible motor and pump combination, comprising a motor casing, a motor in
said motor casing, a pump casing, a pump in said pump casing, the materials ...
Submersible pump
US Pat. 4844699 - Filed Apr 6, 1984 - Hoppmann Corporation
In addition, there is a potential of an 20 the invention will become apparent to
those skilled in oil leak from the submersible electric pump into the the ...

Elevated electrical connector assembly
US Pat. 5795169 - Filed Dec 3, 1996
16) When wellhead 21 is flowing a hot oil, components 3la, connected to a downhole
electric submersible pump (not and> will also be hot and radiate heat to ...

Data transmission system
US Pat. 5515038 - Filed Nov 15, 1993 - Camco International Inc.
A system for communicating AC power from a surface location to a down-hole motor
and electric submersible pump assembly over a three conductor cable, ...

Down-hole gas anchor device
US Pat. 4676308 - Filed Nov 22, 1985 - Chevron Research Company
The electric submersible pump, on the other hand, is a centrifugal device powered
by an elec- 25 trie motor. It is mounted down-hole in a well. ...

[APPLICATION] Automatic Detection of Resonance Frequency of a Downhole System
US Pat. App 11/161,087 - Filed Jul 22, 2005 - SCHLUMBERGER TECHNOLOGY CORPORATION
The resonance frequency detection software 134 works with an electric submersible
pump assembly 102 that includes a downhole sensor module that is able to ...

Wellhead with ESP cable pack-off for low pressure applications
US Pat. 6530433 - Filed Dec 8, 2000 - Robbins & Myers Energy Systems, L.P.
... power cable for powering a downhole electrical submersible pump including an
electrical ... then through the power cable port and to the electric motor; ...

Complexity index methodology for the analysis of run life performance
US Pat. 6704689 - Filed Jan 20, 2000 - Camco International, Inc.
A typical electric submersible pumping system includes a pump (block 38), an
intake (block 40) through which wellbore fluids are drawn into pump 38, ...

Strap cutter and method
US Pat. 4314400 - Filed Aug 25, 1980
They comprise an electric motor-pump BRIEF DESCRIPTION OF THE DRAWINGS ...
The SUMMARY OF THE INVENTION when a submersible pump is to be installed or rein ...

Well operations system
US Pat. 6547008 - Filed Sep 7, 2000 - Cooper Cameron Corporation
Of Machine Design; Electrical Submersible Pump for Subsea Completed Wells; Dec.
... of Ministers Program for Petroleum Technology; Electric Submersible Pump ...

[APPLICATION] Submersible Pumping System and Method for Boosting Subsea Production Flow
US Pat. App 10907114 - Filed Mar 21, 2005 - SCHLUMBERGER TECHNOLOGY CORPORATION
60/, entitled, "ELECTRIC SUBMERSIBLE PUMPING SYSTEM AND METHOD FOR BOOSTING ...
production well with a submersible pump connected to the production well and ...
LIQUID LEVEL CONTROL SYSTEM
US Pat. 2975347 - Filed May 6, 1957
The pump motor unit includes a pump portion 22 having a discharge conduit 23 and
an electric motor contained within a fluid tight casing or enclosure 24 and ...

[APPLICATION] Technique for producing a high gas-to-liquid ratio fluid
US Pat. App 9/877,456 - Filed Jun 8, 2001
... a variety of electric submersible pumping system components may be added, ...
a submersible motor; a submersible pump powered by the submersible motor; ...

Submersible canned motor mixer pump
US Pat. 5674057 - Filed Mar 3, 1995 - Westinghouse Electric Corporation
A submersible motor mixer pump of claim 2, further electric motor means 57 has
indicated a maximum winding comprising: with a resultant operating life being ...

Motor bearing with locking pins
US Pat. 4521708 - Filed Mar 15, 1984 - Hughes Tool Company
An elongated electric motor for a submersible pump, comprising in combination:
a housing filled with lubricating fluid; a stator mounted in the housing and ...

Downhole oil and water separation system and method
US Pat. 6092599 - Filed Sep 17, 1998 - Texaco Inc.
For example, a typical 24, or more particularly, at the end of second tubing
section electrical-powered submersible centrifugal pump is from 24b. about 25% ...

Protector for submersible electric motors
US Pat. 3947709 - Filed Jun 20, 1974 - Ethyl Corporation
The shield may also be filled with The submersible pump motors are ... contact the
copper motor wind- a submersible, liquid-filled electric motor connected ...

Oil well heater cable
US Pat. 5782301 - Filed Oct 9, 1996 - Baker Hughes Incorporated
... for an electrical submersible pump, which may be 1000 to 2000 volts. ...
as in conventional electric power cable for electrical submersible pumps. ...

Below motor pressure compensation system for submersible pump
US Pat. 4436488 - Filed May 26, 1981 - Hughes Tool Company
The downhole portion of the pump assembly includes a large electric motor with
a shaft ... of the lower portion of the submersible pump assembly of FIG. 1. ...

TURK SUBMERSIBLE PUMP MOTOR
US Pat. 3382383 - Filed Sep 13, 1965 - Vincent K
A submersible electric motor comprising a stator assembly, ... The submersible
electric motor of claim 1 wherein said adjacent support bearing is further ...

Self-centering rotor bearing assembly for submersible pump motors
US Pat. 6091175 - Filed Mar 12, 1998 - Camco International, Inc.
... the same limited ASSEMBLY FOR SUBMERSIBLE PUMP amount of axial mobility. ...
the electric motor, a motor protector, and a pump suspended 15 sleeve, ...
Submersible pump impeller design for lifting gaseous fluid
US Pat. 6676366 - Filed Mar 5, 2002 - Baker Hughes Incorporated
Field of the Invention This invention relates in general to electric ...
to submersible pumps that have an impeller configuration designed for fluids with a ...

Method and apparatus of providing an optical fiber along a power supply line
US Pat. 6943340 - Filed Jul 2, 2004 - Sensor Highway Limited
... (a) providing a producing string carrying an electrical submersible pump for
... (b) an electric powerline in the conduit carrying electric power to a ...

[APPLICATION] Method and apparatus for mounting pumps within a suction vessel
US Pat. App 11/000,851 - Filed Dec 1, 2004
8, 2006 two motor-pump assemblies including a submersible electric motor, and a
submersible pump in operable communication with the submersible electrical ...

Apparatus and method for calibrating a motor monitor by reading and storing ...
US Pat. 4864287 - Filed Oct 1, 1986 - Square D Company
A further object is to provide a control for a pump The present ... a control
for a electric motors driving submersible pumps that deliver pump motor with ...

Environmentally safe wellhead
US Pat. 5377747 - Filed Aug 11, 1993 - BIW Connector Systems, Inc.
... about the ends of the cable being used to carry power to the submersible pump.
... is a seal which meets all standards of the National Electric Code. ...

Retrievable sealing plug coil tubing suspension device
US Pat. 5544706 - Filed May 24, 1995
Electric submersible pumps are frequently used in such low pressure 10 wells.
The electric submersible pump or motor-pump assembly are installed inside the ...

Multistage pump and method of making same
US Pat. 6971848 - Filed Oct 1, 2003 - Schlumberger Technology Corporation
In some applications, this type of pump is used in the production of oil. The pump
may be connected into an electric submersible pumping system located, ...

Fiber-optic cable as integral part of a submersible motor system
US Pat. 7208855 - Filed Mar 12, 2004 - Wood Group ESP, Inc.
Tool string 22 comprises a submersible pump 24, a seal section 26 connected to
the submersible pump 24, and an electric submersible motor 28 connected to ...

Submersible pump controller
US Pat. 7131330 - Filed Aug 18, 2004 - Richal Corporation
For example, electric utilities commonly use water submersible pumps in ...
is 40 mounted on a water submersible pump. The probe extends into any water that ...

[APPLICATION] Hydrodynamic bearing runner for use in tilting pad thrust bearing assemblies ...
US Pat. App 11640382 - Filed Dec 18, 2006
One embodiment of the invention provides an electrical submersible pump that
includes a ... The pump is powered by an electric cable that connects the pump, ...
Well pumping equipment
US Pat. 6135732 - Filed Dec 11, 1998 - Otkrytoe Aktsionernoe Obschestvo "Almetevski Nasosnyi Zavod"
BACKGROUND OF THE INVENTION Known in the art is a submersible pump assembly com-
10 prising an electric motor having an electromechanical transducer shaft ...

[APPLICATION] Electric submersible pump with specialized geometry for pumping viscous ...
US Pat. App 10/946,892 - Filed Sep 22, 2004
Date: Feb.,2005 (54) ELECTRIC SUBMERSIBLE PUMP WITH SPECIALIZED GEOMETRY FOR
PUMPING VISCOUS CRUDE OIL (76) Inventors: Farral D. Gay, Claremore, OK (US); ...

Multiplex submersible pump telemetry system
US Pat. 4631536 - Filed Oct 14, 1983 - Hughes Tool Company
Description of the Prior Art The submersible pump installations concerned herein
include a large electric motor located in the well, the 20 electric motor ...

Long stroke, double acting pump
US Pat. 4406598 - Filed Oct 14, 1980
According to conventional practice, the submersible Still another object of the
invention is to provide an pump which is driven downhole by the ...

Rotor bearing for submersible pump motor
US Pat. 5128573 - Filed Mar 12, 1991 - Oil Dynamics, Inc.
45 Specifically, the invention is directed to a submersible electric motor that
... pump and/or equipment normally found in submersible motor/pump systems. ...

Christmas tree
US Pat. 6227301 - Filed Jan 11, 1999 - Expro North Sea Limited
In the absence of a requirement for an electrical submersible pump, ... of electrical
power between the surface and electric submersible pump. ...

Surge suppression system for submersible electrical motors
US Pat. 4967303 - Filed May 15, 1989 - McNeil (Ohio) Corporation
1 and includes a pump unit 11 which may consist of a plurality of stacked ...
The third component of a typical submersible pump 10 is the electric motor ...

Portable self-contained ground water testing assembly
US Pat. 5211203 - Filed May 15, 1992
... be used to operate a system We submersible pump 50 attached to the free end
... relief cable is looped around a bolt 56 that runs electric solenoids 73. ...

Rolling diaphragm seal arrangement for a submersible pump system
US Pat. 5725365 - Filed Dec 12, 1995
More specifically, the present invention relates to a submersible pump ...
Even in areas where electric power is 30 available, it is common to employ pumps ...
Sewage effluent disposal system having sparger in holding tank
US Pat. 5597477 - Filed May 11, 1995
1, 3, 4 and 5 of the drawings, a submersible pump 4 is located in a pump casing 4a
... wiring 38 to an electric control box 10 located in the structure 33, ...
SUBMERSIBLE PUMP
US Pat. 3195468 - Filed May 10, 1963 - Mowid Anstalt
(Cl. 103—87) The invention relates to a submersible pump such as a waste pump,
and more particularly a centrifugal pump driven by the shaft of an electric ...

SUBMERSIBLE MOTOR FOR SUBMERSIBLE PUMP
US Pat. 3539849 - Filed Jun 2, 1969
A submersible structure including a motor adapted to drive a pump when ...
in that no shaft seal is required to protect the electric windings from unwanted ...

Backspin detection circuit for a submersible pump
US Pat. 4410845 - Filed Oct 1, 1981 - Hughes Tool Company
Means for preventing restarting of a submersible pump AC electric motor ...
In a submersible pump system having an electrical motor located in the well for ...

Moisture detector
US Pat. 3949389 - Filed Oct 2, 1974 - ITT Industries, Inc.
... submersible pump wherein due to the motion electrical submersible pump. ...
the electrodes and certain devices such as electric submersible; pumps. ...

Landscape pond
US Pat. 5524399 - Filed Jan 4, 1995 - Avon Plastics, Inc.
With the electric cord of submersible pump 42 plugged into a source of electric
power, pump 42 draws water into its inlet and a stream of water emanates ...

U.S. Patent 4667264
US Pat. 4667264
16, 1984, now abandoned. sensing a phase sequence of electric energy carried by
... driven submersible pump, between the motor and an electric power supply. ...

Computer control system for portable self-contained ground water testing ...
US Pat. 5432709 - Filed Oct 27, 1993
The being pumped by the submersible pump can be directed lower end of boom ...
relief cable is looped around a bolt 56 that runs electric solenoids 73. ...

Submersible concatenated system
US Pat. 6468058 - Filed Jul 21, 2000 - Wood Group ESP, Inc.
T& ir • i able speed drive coupled directly to an electric submersible mersible
... invention provides a concatenated pump system that pumping systems ...

SUBMERSIBLE PUMP
US Pat. 3824042 - Filed Nov 16, 1972
It is an object of the present invention to provide a submersible pump ...
nism capable of rotating the shaft it is preferred to use an electric motor. ...

Narrow accessway sewage collection tank assembly, remote operated quick ...
US Pat. 4822213 - Filed Dec 30, 1987 - Environment/One Corporation
The above-noted "Submersible Sewage Pumping systems electric switch turns on the
sewage grinder pump caus- Handbook". Submersible pump wet well sewage sys- ...
Toroidal inductor for a pressure sensor in a submersible pump
US Pat. 4492523 - Filed Feb 10, 1984 - Hughes Tool Company
This holds the submersible electric motor located below the pump. bellows in a
stationary position other than the maximum The shaft of the electric motor ...

Method of producing oil from a formation fluid containing both oil and water
US Pat. 4296810 - Filed Aug 1, 1980
The electric motor (86) is mechani- 10 cally coupled to the brine pump (84) by means
... Although an electrical submersible pump arrangement is preferred, ...

SUBMERSIBLE PUMP MOTOR
US Pat. 2218003 - Filed Feb 25, 1937
It is an object of this invention to provide a submersible pump driven by an
electric motor and having a maximum of protection for the electric motor. ...

Downhole separator for wells
US Pat. 4241787 - Filed Jul 6, 1979
The electric motor is mechanically coupled to the brine pump by means of 15 a shaft
... Although an electrical submersible pump arrangement is preferred, ...

Electrical cable for use in extreme environments
US Pat. 4532374 - Filed Apr 12, 1984 - Harvey Hubbell Incorporated
... shape for supplying electrical power to submersible oil well pumps. ...
electric submersible pump housing or other structure to which the cable is ...

LIQUID LEVEL CONTROLLING MEANS
US Pat. 1942241 - Filed Nov 26, 1930 - Westinghouse Electric a Manufacturing Company
1 of the drawings, 11 designates the electric motor of a submersible pump-set.
The pump 12 is directly connected to the motor housing and a diving bell 14 ...

Submersible pumping system
US Pat. 6964299 - Filed Aug 13, 2003 - Schlumberger Technology Corporation
2, first electric submersible pumping system 22 comprises a first drive shaft 58
by which the motor or motors 26 drive submersible pump 28. ...

[APPLICATION] Submersible pumping system
US Pat. App 10/639,838 - Filed Aug 13, 2003
2, first electric submersible pumping system 22 comprises a first drive shaft 58
by which the motor or motors 26 drive submersible pump 28. ...

Stator and bearing for submersible pump motor
US Pat. 5003210 - Filed Dec 20, 1989 - Oil Dynamics, Inc.
The submersible electric motor, of a submersible electric motor. ... The stator
comprises a plurality of pump and/or equipment normally found in submersible ...

Mounting device for submersible electric motor driven pump
US Pat. 5823751 - Filed Oct 8, 1996 - ITT Flygt AB
... [54] MOUNTING DEVICE FOR SUBMERSIBLE ELECTRIC MOTOR DRIVEN PUMP [75] Inventors:
Torbjorn Sjoblom, Johanneshov; Bjorn Unden, Solna, both of Sweden [73] ...
[APPLICATION] System and Method for Sensing Parameters in a Wellbore
US Pat. App 11/164,428 - Filed Nov 22, 2005 - SCHLUMBERGER TECHNOLOGY CORPORATION
Description of Related Art [0004] An electric submersible pumping system generally
is formed as an electric submersible pump string having at least three ...

[APPLICATION] Technique for sensing flow related parameters when using an electric ...
US Pat. App 10/041,514 - Filed Jan 8, 2002
[0017] The various components of electric submersible pumping system 12 may be
... Submersible pump 64 incorporates or is connected to a fluid intake 66 ...

PRESSURE AND HEAT SENSING MEANS FOR SUBMERSIBLE MOTORS
US Pat. 3284669 - Filed Nov 28, 1962 - Borg
In pumping the fluid from oil or water wells, it is becoming more conventional
under certain conditions to use a submersible electric motor and pump unit ...

Assembly for sealing and pressure equalization of a submersible housing
US Pat. RE30382 - Filed Oct 16, 1978 - Sta-Rite Industries, Inc.
Submersible pumps are used to pump fluids such as 15 water from a well. A housing
enclosing an electric motor for operating such a pump is immersed in the ...

[APPLICATION] Submersible pump deployment and retrieval system
US Pat. App 10/804,792 - Filed Mar 19, 2004
A system for pumping fluids from a well, comprising: an electric submersible
pump; a power conduit operatively connected to the electric submersible pump, ...

SUBMEBSIBLEI PUMP
US Pat. 2670686 - Filed Dec 13, 1950 - The Dayton
In combination; a drop pipe to support a submersible pump independent of the
electric cable, a centrifugal pump supported by the drop pipe and in fluid ...

[APPLICATION] Self lubricating submersible pumping system
US Pat. App 10/352,454 - Filed Jan 28, 2003
The artificial lift is commonly provided by pumping systems, such as electric
submersible pumping systems. When using such a system, a submersible pump ...

Surface pump assembly
US Pat. 6779608 - Filed Apr 4, 2001 - Weatherford/Lamb, Inc.
Pumping oil out of a well that does not have adequate 30 natural formation pressure
is conventionally done through the use of an electric submersible pump ...

[APPLICATION] Submersible Electric Motor Terminated for Auxiliary Tools
US Pat. App 11531951 - Filed Sep 14, 2006 - SCHLUMBERGER TECHNOLOGY CORPORATION
[0005] An embodiment of an electric submersible pump system having a fluid-filled,
electric motor adapted for connecting to and disconnecting from an ...

[APPLICATION] Water well pump
US Pat. App 11/655,032 - Filed Jan 18, 2007
[0006] Two of the commonly used well pumps at the present time are the electric
submersible pump and the reciprocating plunger well pump. ...
HYDRAULICALLY OPERATED SYSTEM FOR SUBSURFACE OPERATIONS
US Pat. 3702223 - Filed Oct 7, 1971 - g Viking Explosives a Supply Inc
Novel concepts of the invention are presented more Another approach would be use
of an electrically operated submersible pump. However, use of electric ...

Electrically motorized pump having a submersible sleeve bearing
US Pat. 7008196 - Filed Mar 11, 2004 - Minebea Co. Ltd.
More specifically, the present invention relates to an electric submersible pump
having a sleeve bearing that has a small coefficient of friction in water. ...

[APPLICATION] System for Well Logging
US Pat. App 11426140 - Filed Jun 23, 2006 - SCHLUMBERGER TECHNOLOGY CORPORATION
Additionally, the electric submersible pumping system can be operated to move well
... As illustrated, submersible pump 48 comprises an outer housing 58 ...

Bubble trap for epoxy sealant in a submersible electric motor
US Pat. 5025185 - Filed Jun 7, 1988 - Aquaria, Inc.
Typically, such submersible pumps comprise a rotating impeller, the impeller
being attached to the rotor of an electric motor. The pump typically includes a ...

[APPLICATION] System and method for determining pump underperformance
US Pat. App 10/840,568 - Filed May 6, 2004
2 is illustrated as having a submersible pump unit 42, a pump intake 44, and an
electric motor 46 that powers submersible pump 42. Submersible pump unit 42 ...

Water well completion method
US Pat. 5289888 - Filed May 26, 1992 - RRKT Company
The electric submersible pump 25 preferably is positioned near the beginning of
the horizontal section 24, or near the beginning of the curved section 23, ...

[APPLICATION] Electrically motorized pump having a submersible sleeve bearing
US Pat. App 10/798,026 - Filed Mar 11, 2004 - Minebea Co., Ltd.
Field of the Invention [0003] The present invention relates to an electric
submersible pump for circulating cooling water in water-cooled engines. ...

[APPLICATION] Self-lubricating ceramic downhole bearings
US Pat. App 10464586 - Filed Jun 18, 2003
[0003] Artificial lift is commonly provided by pumping systems, such as electric
submersible pumping systems. When using such systems, a submersible pump ...

[APPLICATION] Pressurized bearing system for submersible motor
US Pat. App 9/838,741 - Filed Apr 19, 2001
Description of the Prior Art [0004] A conventional, electric, submersible pump (ESP)
assembly includes an electric motor and a pump that is used to pump oil

[APPLICATION] Pressurized bearing system for submersible motor
US Pat. App 10/684,969 - Filed Oct 14, 2003
Field of the Invention [0002] This invention relates generally to electric,
submersible pump assemblies and relates particularly to a pump assembly having ...
[APPLICATION] Stage pump having composite components
US Pat. App 10/676,319 - Filed Oct 1, 2003
An electric submersible pumping system, comprising: a submersible motor; a motor
protector; and a submersible pump with a plurality of stages, ...

Portable pump housing for an operable submersible pump unit
US Pat. 5860792 - Filed Apr 24, 1996
However, offshore submersible pump assemblies have been difficult to maintain
and repair due to ... The risk of electric shock to the maintainer, swimmer, ...

Resistant components for submersible pump stages
US Pat. 4678399 - Filed Oct 23, 1985 - Hughes Tool Company
Description of the Prior Art 15 A submersible centrifugal pump assembly of the
type concerned herein includes a downhole electric motor coupled to a ...

Sub sea pile-sump pumping arrangement
US Pat. 6419458 - Filed Oct 16, 2000 - Mentor Subsea Technology Services, Inc.
This reduces the expense and risks associated with performing intervention tasks
on the well. The use of an electric submersible pump provides potential ...

[APPLICATION] System and Method for Controlling Subsea Wells
US Pat. App 11164233 - Filed Nov 15, 2005 - SCHLUMBERGER TECHNOLOGY CORPORATION
[0015] In this embodiment, each completion 22 comprises at least one electric
submersible pumping system 38 having a submersible pump 40. ...

SUBMERSIBLE PUMP WITH GUIDE MEANS
US Pat. 3861834 - Filed Nov 30, 1971 -
The submersible electric motor-pump assembly according to claim 1, wherein said
alignment rail is removably connectable to said discharge pipe. ...

[APPLICATION] Seismic analysis using electrical submersible pump
US Pat. App 11/413,307 - Filed Apr 28, 2006
In this invention a down hole electric submersible pump that is rotated by a
variable speed drive acts the seismic source. By sweeping the frequency of the ...

Seismic analysis using electrical submersible pump
US Pat. 7308362 - Filed Apr 28, 2006 - Baker Hughes Incorporated
In this invention a down hole electric submersible pump that is rotated by a
variable speed drive acts the seismic source. By sweeping the frequency of the ...

Multi-lateral well with downhole gravity separation
US Pat. 6923259 - Filed Jan 14, 2003 - ExxonMobil Upstream Research Company
An electric submersible pump 4 has been deployed within the tubing 3 to a position
below the perforations 7. The electric submersible pump 4 is operated at ...

Heard that Green Country Pump will be introducing new technology downhole tools in partnership with a Norwegian oilfield technology company. It should have quite an impact and big improvement for their clients.

Green Country looking to grow, and to do it with technology advancements and better service.

Heard that B.J. out of Lindsey just left Centrilift and is now with Chapparal. Who's left in that Lindsey operation with real experience? Another very talented person.They can't hold on to them. Claremore and Houston management, it's got to be sad.

Please email patents and links for inclusion on this list to service@esplift.com
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Electric submersible pump
US Pat. 4002936 - Filed Jun 11, 1974
... Agent, or Firm — Pennie & Edmonds [57] ABSTRACT An electric submersible pump
having an electric motor forming a unit with the pump impeller and where ...
Split stream pumping system for oil production using electric submersible ...
US Pat. 5842520 - Filed Jan 2, 1996 - Texaco Inc.
Produced fluid is allowed to separate in the casing—production tubing annulus
and the first electric submersible pump pumps the separated oil to the ...

Live well deployment of electrical submersible pump
US Pat. 6328111 - Filed Sep 27, 1999 - Baker Hughes Incorporated
... coil tubing Electric Submersible Pumping Systems; G. Pastor, R.Knoppe;. ...
The submersible pump assembly is lowered on a line into the chamber, ...

Recirculating gas separator for electric submersible pumps
US Pat. 4981175 - Filed Jan 9, 1990 - Conoco Inc
An electric submersible pump 12 is demonstrates that rotary gas separators are
capable of schematically illustrated in phantom lines above separa- removing ...

Deep well electrical submersible pump with uplift generating impeller means
US Pat. 5201848 - Filed Oct 1, 1991 - Conoco Inc.
r*«j -«u » v • The electric submersible pump (ESP) is perhaps the smail diameter
pumps, such as being run into deep most versatile of the major oil ...

Clamp for attaching electric submersible pump cable to sucker rod
US Pat. 5255739 - Filed Dec 9, 1992 - Hubbell Incorporated
... Mark S. Bicks [57] ABSTRACT A clamp attaches an electric submersible pump
cable to a sucker rod to deploy and support the cable in an oil well. ...

Electric submersible pump assembly
US Pat. 6595295 - Filed Aug 3, 2001 - Wood Group ESP, Inc.
22, 2003 (54) ELECTRIC SUBMERSIBLE PUMP ASSEMBLY (75) Inventors: Michael R.
Berry, Norman, OK (US); Yasser Khan Bangash, Norman, OK (US) (73) Assignee: Wood ...

Electric submersible pump assembly with tube seal section
US Pat. 6602059 - Filed Jul 25, 2001 - Wood Group Esp, Inc.
US Bl ELECTRIC SUBMERSIBLE PUMP ASSEMBLY WITH TUBE SEAL SECTION RELATED APPLICATIONS
This application claims priority to Provisional Applica- 5 tion Ser. ...

System for deploying submersible pump using reeled tubing
US Pat. 5180014 - Filed Feb 14, 1991 - Otis Engineering Corporation
A method for deploying an electric submersible pump on reeled tubing in a
subterranean wall, said method comprising the steps of: providing reeled tubing; ...

Electric submersible pump with hollow drive shaft
US Pat. 6120261 - Filed Aug 25, 1998 - Saudi Arabian Oil Company
... or Firm—Abelman, Frayne & Schwab [57] ABSTRACT A combined electric motor and
submersible pump apparatus intended for installation in line with the well ...

Synchronous electric motor, particularly for submersible pumps, and pump ...
US Pat. 5767606 - Filed Aug 2, 1996 - Hydor S.R.L.
... [54] SYNCHRONOUS ELECTRIC MOTOR, PARTICULARLY FOR SUBMERSIBLE PUMPS, AND PUMP
INCLUDING THE MOTOR [75] Inventor: Valerio Bresolin. Pove Del Grappa. ...
SUBMERSIBLE PUMP AND ELECTRIC
US Pat. 2004866 - Filed Oct 4, 1934 -
SUBMERSIBLE ... SUBMERSIBLE PUMP AND ELECTRIC MOTOR UNIT Filed Oct. 4, ...

Electrical submersible pump for lifting heavy oils
US Pat. 5159977 - Filed Jun 10, 1991 - Shell Oil Company
... electric submersible pumps in pumping viscous oils, ie, ELECTRICAL SUBMERSIBLE
PUMP FOR motor cooling and low pump efficiencies, can be over- LIFTING ...

Multi-parameter fiber optic sensor for use in harsh environments
US Pat. 5892860 - Filed Jan 21, 1997 - CiDRA Corporation
Such pump operation is described in "Recommended Practice for Operation, Maintenance
and Troubleshooting of Electric Submersible Pump Installations", ...

Reeled tubing deployed packer with control line bypass
US Pat. 5479991 - Filed Jan 10, 1994 - Halliburton
In a common arrangement, an electric submersible pump may be located below the
... Other configurations are possible for an 20 electric submersible pump. ...

Adjustable spacer with rotational lock
US Pat. 4433725 - Filed Oct 2, 1981 - Baker International Corporation
DESCRIPTION OF THE PRIOR ART Where an electric submersible pump is employed on
10 the bottom of a tubing string in an oil well, it is neces- . sary to ...

In situ separable electric submersible pump assembly with latch device
US Pat. 6561775 - Filed Sep 13, 2001 - Wood Group ESP, Inc.
55 Currently the whole electric submersible pump assembly must be pulled out of
the hole and run back in whenever a pump failure occurs, such as when a ...

Dehumidifier apparatus with pump and method
US Pat. 5074119 - Filed May 4, 1990
The apparatus of claim 3 wherein the electric submersible pump is electrically
powered and is constructed to be submerged in the condensate water and is ...

Dual gearbox electric submersible pump assembly
US Pat. 6598681 - Filed Aug 15, 2001 - Wood Group ESP, Inc.
... or Firm—Crowe & Dunlevy, PC () ABSTRACT The present invention provides a
electric submersible pump assembly lor producing a fluid Irom a production zone ...

Two-piece lead seal pothead connector
US Pat. 5700161 - Filed Oct 13, 1995 - Baker Hughes Incorporated
An electric submersible pump according to the present invention includes a ...
In an electric submersible pump assembly of the type having a downhole pump ...

Hoisting apparatus for electric submersible pump units
US Pat. 4573726 - Filed Apr 5, 1984
In order to ensure that the coupling part () can be attached easily and automatically
to the connecting element (26) provided on the submersible pump unit ...
Electrical submersible pump and methods for enhanced utilization of ...
US Pat. 6167965 - Filed Feb 8, 1999 - Baker Hughes Incorporated
3A, 3B, and 3C schematically depict shrouded submersible pumps, ... pump during
comple- processing implemented determination of the electric motor r,~ ,„ ...

Electric submersible pump assembly with tube seal section
US Pat. 6602059 - Filed Jul 25, 2001 - Wood Group Esp, Inc.
FIELD OF INVENTION The present invention relates to the field of electric
submersible pump assemblies and associated support equipment, ...

Method and apparatus for the downhole metering and control of fluids ...
US Pat. 6000468 - Filed Aug 1, 1997 - Camco International Inc.
In another aspect, the present invention may be a down- hole system to dewater
raw crude including: an electric submersible pump in fluid communication with ...

Method and apparatus for transmitting data over a power cable utilizing a ...
US Pat. 5670931 - Filed Jun 17, 1994 - Baker Hughes Incorporated
... said electric power supply residing at the surface of the earth; 35 providing
a power cable; lowering said electric submersible pump, said power cable, ...

Dual injection and lifting system using rod pump and an electric submersible ...
US Pat. 6131660 - Filed Sep 17, 1998 - Texaco Inc.
... SYSTEM USING ROD PUMP AND AN ELECTRIC SUBMERSIBLE PUMP (ESP) The present
application claims priority under 35 USC 5 §119(e) to provisional application ...

Recirculating pump for electrical submersible pump system
US Pat. 5845709 - Filed Jan 16, 1996 - Baker Hughes Incorporated
Electrical submersible pump 25 (ESP) systems have been found to meet this need.
However, the electric motor used in such systems generate considerable heat ...

Clean water injection system
US Pat. 6457522 - Filed Nov 28, 2000 - Wood Group ESP, Inc.
The electric submersible pumping device 12 has a multistage pump assembly 22 and
an electric submersible motor assembly 24. The pump assembly 22, ...

Submersible electric pump
US Pat. 6926504 - Filed Jun 26, 2002 - Total Fiza Elf
SUBMERSIBLE ELECTRIC PUMP CROSS-REFERENCE TO RELATED APPLICATIONS This application
claims priority to a pending provisional patent application entitled ...

System for pumping fluids from horizontal wells
US Pat. 5154588 - Filed Oct 18, 1990 - Oryz Energy Company
An article K. Way, Kevin Welte and N. Kapsch, presented at the 1990 Electric
Submersible Pump Workshop sponsored by Society of Petroleum Engineers, ...

Pothead with pressure energized lip seals
US Pat. 6361342 - Filed Sep 11, 2000 - Baker Hughes Incorporated
SUMMARY OF THE INVENTION 55 A pothead connector for use with an electric submersible
pump is provided to connect a downhole cable to an electrical motor of ...
Well production apparatus and method
US Pat. 6454010 - Filed Jun 1, 2000 - Pan Canadian Petroleum Limited
The use of electric submersible pumps is limited by horsepower and temperature
restrictions. Jet pumps typically employ a high pressure surface pump to ...

Electrical adaptor for downhole submersible pump
US Pat. 4728296 - Filed Sep 5, 1986
... to the electric motor comprising part of the sub- /adaptor used to provide
... A submersible downhole pump, on the other downs occur because of them and ...

Motor controller for electrical submersible pumps
US Pat. 5015151 - Filed May 14, 1990 - Shell Oil Company
The apparatus of claim 3 or 4 wherein the pump motor drive is selected from (1)
an electric motor and (2) a hydraulic motor. 6. The apparatus of claim 3 or ...

Sewerage pumping means for lift station
US Pat. 4529359 - Filed May 2, 1983
Another advantage is that, 10 whereas the hydraulic submersible pump can be designed,
... On the other hand, electric submersible pumps have inherent design ...

Liquid petroleum gas submersible electric motor driven pump and drive ...
US Pat. 6129529 - Filed Sep 29, 1998 - Marley Pump
The particulars of the multi-stage centrifugal pump assembly P will be discussed
in more detail below. The submersible pump P is driven by an electric motor ...

Corrosion-resistant submersible pump electric cable
US Pat. 6555752 - Filed Dec 21, 2001 - Baker Hughes Incorporated
(54) CORROSION-RESISTANT SUBMERSIBLE PUMP ELECTRIC CABLE (75) Inventors: Larry
Verl Dalrymple, Claremore, OK (US); Ernesto Alejandro Vilcinskas, Claremore, ...

Hydraulic release apparatus and method for retrieving a stuck downhole tool ...
US Pat. 5361834 - Filed Sep 2, 1993 - Halliburton Company
The support sleeve is disposed verted pump, an electric submersible pump, ...
The variable volume electric submersible pump can be activated to begin fluid ...

System for pumping fluids from horizontal wells
US Pat. 5271725 - Filed Apr 14, 1992 - Oryx Energy Company
An article K. Way, Kevin Welte and N. Kapsch, presented at the 1990 Electric
Submersible Pump Workshop sponsored by Society of Petroleum Engineers, ...

Artificial lift, concentric tubing production system for wells and method of ...
US Pat. 6179056 - Filed Feb 2, 1999 - YPF International, Ltd.
The pump assembly is adapted to remove fluid simultaneously from two separate
... It is desirable that the electric submersible pumps be 30 retrievable ...

Submersible pump
US Pat. 4537257 - Filed Mar 16, 1984 - Shell Oil Company
An electric driven submersible pump used for the production of crude oil normally
comprises an electric motor at the bottom of the apparatus and a multiple ...
Through-tubing, retrievable downhole submersible electrical pump and method ...
US Pat. 5746582 - Filed Sep 23, 1996 - Atlantic Richfield Company
The pump unit 17 in such systems may be any type of downhole, electrically-driven
submersible pump, eg a centrifugal pump or a progressive cavity pump, ...

SUBMERSIBLE ELECTRIC PUMP HAVING FLUID
US Pat. 3746472 - Filed Aug 6, 1971 - he Warren Rupp Company
[57] ABSTRACT A submersible electric motor driven pump having a motor chamber
and a pump chamber separated by a seal chamber. A shaft seal is immersed in ...

Coupled downhole pump for simultaneous injection and production in an oil ...
US Pat. 5813469 - Filed Mar 12, 1997 - Texaco Inc.
The apparatus recited in claim 1 wherein the driver pump and the production pump
are selected from the group consisting of electric submersible pumps, ...

SUBMERSIBLE PUMP ASSEMBLY
US Pat. 3677665 - Filed May 7, 1971
The construction of a submersible electric vide a submersible pump assembly which
can be readily motor which would fit into the very confined space of ...

Submersible well pump and well completion system
US Pat. 4913239 - Filed May 26, 1989 - Otis Engineering Corporation
A well completion system as defined in claim 1 further comprising: a. a downhole
electric motor to operate the submersible pump; 8 e. separate cylindrical ...

Water separation system with encapsulated electric submersible pumping device
US Pat. 6457531 - Filed Nov 28, 2000 - Wood Group ESP, Inc.
As already noted, gravity and membrane separators do not work well with an electric
submersible pump. Hydro cyclone separators, on the other hand, ...

Virtual sensors to provide expanded downhole instrumentation for electrical ...
US Pat. 6585041 - Filed Jul 23, 2001 - Baker Hughes Incorporated
Cable 103, motor 104 and pump 105, together with a seal (not shown), 20 preferably
form an electrical submersible pump (ESP) system in accordance with the ...

Protector for electrical submersible pumps
US Pat. 6688860 - Filed Jan 29, 2002 - Schlumberger Technology Corporation
A typical submersible pumping system comprises several components, such as a
submersible electric motor that supplies energy to a submersible pump. ...

Submersible pump with handle providing electrical connection and oil port
US Pat. 5207562 - Filed Apr 30, 1992 - The Marley Company
2 is a top plan view of the submersible pump shown in FIG. ... 1, numeral 10
generally designates a submersible electric pump which may be ...

Submersible well pumping system
US Pat. 6017198 - Filed Feb 26, 1997
In well pump applications, this type of pump is 20 driven by a self contained,
closed hydraulic system, activated by an electric or hydraulic motor where ...
System and method for sealing an electrical connection between a power cable ...
US Pat. 6409485 - Filed Jun 6, 2000 - Camco International, Inc.
The pumping system may be an electric submersible pumping system 10. Typically,
system 10 includes at least a, submersible pump 12, such as a centrifugal ...

Methods and apparatus for monitoring and controlling oil and gas production ...
US Pat. 6873267 - Filed Sep 29, 1999 - Weatherford/Lamb, Inc.
The apparatus of claim 13 wherein the retrievable pump system comprises one or
more pumps selected from the group consisting of an electric submersible pump ...

Cable anchor assembly
US Pat. 5193614 - Filed Feb 26, 1991 - Otis Engineering Corporation
2C; and with inverted electric submersible pumps. The electri- FIG. ... 1, cable
deployed pumping system mover of an inverted submersible pump. ...

Dual injection and lifting system using an electrical submersible ...
US Pat. 6123149 - Filed Sep 17, 1998 - Texaco Inc.
For example, a typical electrical-powered submersible centrifugal pump is from
... or very heavy crude oil where more delicate electric pump impellers, ...

Downhole oil/water separation system with solids separation
US Pat. 6189613 - Filed Sep 24, 1999 - Pan Canadian Petroleum Limited
7 is a longitudinal cross sectional view of the solids separation unit of the
present invention with an electric submersible pump with ...

Solenoid operated safety valve and submersible pump system
US Pat. 4798247 - Filed Jul 15, 1987 - Otis Engineering Corporation
A submersible pump is driven by an electric motor and connected to the end of a
tubing string extending from the surface down into the borehole. ...

Well production apparatus including pump means and thermal absorption means
US Pat. 5009264 - Filed May 23, 1990 - Baker Hughes Incorporated
One of the more popular way of the electric submersible pump. artificial life
procedures incorporates the utilization of 20 In m ...

Method for reducing sand production in submersible-pump wells
US Pat. 4926942 - Filed Feb 22, 1989
This application relates to well production and electric submersible pump (ESP)
systems; specifically, it relates to a method for aiding selection and ...

Apparatus for terminating and interconnecting rigid electrical cable and method
US Pat. 5478970 - Filed Feb 3, 1994 - D. G. O'Brien, Inc.
The production tubing 118 extends from the wellhead 114 through the packer 120
to an electric submersible pump 122. The illustrated installation includes, ...

SUBMERSIBLE PUMP ASSEMBLY
US Pat. 3685926 - Filed Nov 2, 1970
i • • i vide an improved submersible electric motor-pump as- 16 'S * surrounding
cylindrical metal insert 20, wh.ch The invention is therefore intended ...
Electrically driven submersible pump system
US Pat. 4500263 - Filed Jul 9, 1984 - Framo Developments (UK) Limited
A pipe stack of a submersible pump system comprising sections in accordance with
... The electric power cable of the prior art systems provides no means for ...

Submersible pump with guide means
US Pat. 4060345 - Filed May 15, 1974
The submersible electric motor-pump assembly of said pump in abutting relationship
to said discharge according to claim 2, wherein said fixed reference is ...

Pump for filtration system
US Pat. 5030346 - Filed Feb 12, 1990 - Henry Filters, Inc.
The lateral the combined submersible electric drive motor and the 45 discharge
conduit is located by the guides opposite the pump due to the direct mounting ...

Method and apparatus for increasing fluid recovery from a subterranean formation
US Pat. 6089322 - Filed Nov 26, 1997 - Kelley & Sons Group International, Inc.
Pump P drives the oil to the surface and, for this application, is preferably a
high volume electric submersible pump P to pump large flow rates of oil 5 ...

Process cooled submersible pump and motor assembly
US Pat. 3969043 - Filed Mar 25, 1974 - Little Giant Corporation
An electric motor, 25 enclosed in the housing, rotates the drive shaft and, ...
Therefore, the heat created by the working parts of a submersible pump must ...

SUBMERSIBLE PUMP
US Pat. 3791773 - Filed Jun 9, 1972 - Little Giant Corporation
SUBMERSIBLE PUMP This application relates to submersible electric pumps.
More specifically, but not by way of limitation, the present invention relates to ...

Dehumidifier apparatus with pump
US Pat. 5212958 - Filed Dec 17, 1991
The apparatus of claim 2 wherein the electric submersible pump is electrically
powered and is constructed to be submerged in the condensate water and is ...

Electric motor of a submersible pump
US Pat. 6218754 - Filed Sep 29, 1999 - Otkrytoe Aktsionernoe Obschestvo Neftyanaya Kompania "Lukoil", Obschestvo & Ogranichennoi Otvetstvennostju
... Harold L. Novick (57) ABSTRACT An electric motor ol a submersible pump includes
... The electric motor serves mainly for use in submersed pump units lor ...

Submersible pumping system with sealing device
US Pat. 7086473 - Filed Sep 3, 2002 - Wood Group ESP, Inc.
An electric submersible pumping system having a pump assembly connected to a
motor, the pump assembly comprising: a pump intake having an intake hole; ...

SUBMERSIBLE PUMP AND ELECTRIC MOTOR
US Pat. 2275679 - Filed Feb 27, 1932
SUBMERSIBLE ... TG MYERS ETAL SUBMERSIBLE PUMP AKD ELECTRIC MOTOR Original Filed
Feb. 27. ...
Dual injection and lifting system using a rod driven progressive cavity pump ...
US Pat. 6092600 - Filed Sep 17, 1998 - Texaco Inc.
For example, a typical electrical-powered submersible centrifugal pump is from 4Q
... or very heavy crude oil where more delicate electric pump impellers, ...

SUBMERSIBLE PUMP AND ELECTRIC MOTOR
US Pat. RE20604 - Filed Oct 4, 1934 -
20604 SUBMERSIBLE ... AND ELECTRIC MOTOR UNIT Original Filed Oct. 4, ...

Pump for filtration systems
US Pat. 5154584 - Filed Nov 15, 1990 - Henry Filters, Inc.
... wall of the discharge 20 there is provided a submersible pump having a lower
... in for are replaced by an electric submersible pump motor communication ...

Submersible pumps
US Pat. 4484862 - Filed Mar 29, 1982 - Grundfos A/S
One end of the piezo-electric material is by FIG. lisa diagrammatic view of a
submersible pump means of the membrane 35 connected to a conductor 38, ...

Extraction system with a pump having an elastic rebound inner tube
US Pat. 4974674 - Filed Mar 21, 1989 - Westinghouse Electric Corp.
The extraction system 600 also comprises a turbine or 20 centrifugal submersible
electric pump 624 positioned below the layer of liquid hydrocarbons 607 and ...

Gas-liquid separator for well pumps
US Pat. 5482117 - Filed Dec 13, 1994 - Atlantic Richfield Company
The present invention provides yet a further improvement in downhole gas-liquid
separators for well pumps wherein an electric motor driven submersible pump ...

SUBMERSIBLE PUMP ASSEMBLY
US Pat. 3802806 - Filed Aug 9, 1972
This invention relates to a submersible electric mo- sembly, the lower part
thereof illustrated in section; tor-pump assembly, that is to say a pump ...

Electrical submersible pumps in the riser section of subsea well flowline
US Pat. 6412562 - Filed Sep 7, 2000 - Baker Hughes Incorporated
Electric motor (not shown) is powered by a power cable 45 (not ... By operating
a submersible pump in the riser region, the amount of production can be ...

Technique for sensing flow related parameters when using an electric ...
US Pat. 6695052 - Filed Jan 8, 2002 - Schlumberger Technology Corporation
In this connected to the suction end of a bottom discharge submers- embodiment,
electric submersible pumping system 12 is ible pump 79. ...

Method and apparatus for producing fluid from a well and for limiting ...
US Pat. 6666269 - Filed Mar 27, 2002 - Wood Group ESP, Inc.
One type of pump that is often utilized is an electric submersible pump.
Electric submersible pumps may be used for a variety of reasons, ...
Low volume variable rpm submersible well pump
US Pat. 4678404 - Filed Jan 24, 1986 - Hughes Tool Company
A submersible pump assembly comprising in combination: a centrifugal pump having
... an electric motor connected directly to the pump for driving the pump; ...

System and method for removing solid particulates from a pumped wellbore fluid
US Pat. 6394183 - Filed Jul 25, 2000 - Schlumberger Technology Corporation
25 One exemplary submersible pumping system is an electric submersible pumping
system that utilizes a submersible electric motor and a submersible pump. ...

Method and apparatus for monitoring well fluid parameters
US Pat. 5213159 - Filed Sep 30, 1991
Sensing apparatus as claimed in claim and located in a position at the bottom of
an electric submersible pump assembly and the remotely sensed parameter is ...

Hydraulic submersible pump for oil well production
US Pat. 6004114 - Filed Feb 13, 1998
139.7 mm) diameter, the available space for a pump arrangement is about 4.85
inches (123.2 mm). Small electric submersible or subsurface pump drives have ...

Gas-lock re-prime device for submersible pumps and related methods
US Pat. 6684946 - Filed Apr 12, 2002 - Baker Hughes Incorporated
Field of the Invention This invention relates generally to electric, submersible
pump assemblies and relates particularly to a pump assem- w bly having an ...

Submersible electric motor having floating bearings
US Pat. 4672249 - Filed Dec 20, 1985 - Ebara Corporation
20 to provide a submersible electric motor for use in a The thrust loads of the
upper and the lower bearings submersible pump or the like, ...

Electric submersible pump with specialized geometry for pumping viscous ...
US Pat. 6854517 - Filed Feb 20, 2002 - Baker Hughes Incorporated
1 generally depicts a well 10 with a submersible pump assembly 11 installed within.
The pump assembly 11 comprises a centrifugal pump 12 that has a seal ...

SEALING MEANS FOB SUBMERSIBLE ELECTRIC MOTOR-PUMP UNITS
US Pat. 2418194 - Filed Apr 19, 1944 - Shasta Pump Company
(C1.286—9) The invention relates to submersible electric motor-pump assemblies
of the type commonly used In deep wells and other installations wherein the ...

Oil well pumpoff control system
US Pat. 3936231 - Filed Nov 5, 1974 - Dresser Industries, Inc.
The control system of claim 11 wherein said determining means comprises circuitry
for monitoring the load current of the electric submersible pump and ...

Method of forming a double armor cable with auxiliary line for an electrical ...
US Pat. 5528824 - Filed Oct 5, 1994 - Baker Hughes Incorporated
A method of forming a cable for an electrical submersible pump, ... line with an
interior containing an electric wire for transmitting electricity. 6. ...
Submersible pump system using a submersible internal combustion engine
US Pat. 4201524 - Filed Sep 5, 1978
State of the Art tight seal between the pump and the enclosure. The Submersible
pumps driven by submersible electric 10 portion of the pump drive shaft ...

Submersible pump equalizer with multiple expanding chambers
US Pat. 4940911 - Filed Jun 21, 1989 - Oil Dynamics, Inc.
3 illustrates how the equalizer is connected into the submersible pump system.
... The motor is an electric motor which is typically used to drive the pump. ...

Oil well pumpoff control system
US Pat. 3936231 - Filed Nov 5, 1974 - Dresser Industries, Inc.
The control system of claim 11 wherein said determining means comprises circuitry
for monitoring the load current of the electric submersible pump and ...

Electrical cable in reeled tubing
US Pat. 5191173 - Filed Apr 22, 1991 - Otis Engineering Corporation
8 is a schematic elevation view, partially in provided to avoid thermal degradation
of cable core 12 an electric submersible pump deployed downhole by 55 ...

Apparatus for terminating and interconnecting rigid electrical cable and ...
US Pat. 5670747 - Filed Feb 1, 1995 - D.G. O'Brien, Inc.
1, a wellhead penetrator 126 at the top of the well couples electric power and
control signals through the wellhead 114. An electric submersible pump (ESP) ...

Downhole rotary water separation system
US Pat. 6547003 - Filed Sep 29, 2000 - Wood Group ESP, Inc.
The membrane separator is not well suited to use with an electric submersible
pump (ESP) due to the high flow rates and limited space. ...

Pump system and method for operating the same
US Pat. 5667362 - Filed Mar 23, 1994 - Ebara Corporation
Accordingly, the conventional system including a rubber vane submersible pump
gives rise to the problem that electric power consumption is high and a long ...

Submersible pumps
US Pat. 6557642 - Filed Feb 28, 2001 - XL Technology LTD, TSL Technology
... especially electrically powered assemblies such as electric submersible pumps
... BACKGROUND OF THE INVENTION A conventional electrical submersible pump ...

Conductor assembly for pothead connector
US Pat. 6443780 - Filed Aug 23, 1999 - Baker Hughes Incorporated
SUMMARY OF THE INVENTION A pothead connector for use with an electric submersible
pump is provided to connect a downhole cable to an electrical motor of the ...

Canned motor pump with heat exchanger in rotor chamber
US Pat. 5144177 - Filed Apr 12, 1991 - KSB Aktiengesellschaft
15 An electric, submersible pump aggregate for containers with explosive or other
dangerous fluids is disclosed in the German Offenlegungsschrift 2 006 681 ...
SUBMERSIBLE PUMP MOUNTING APPARATUS
US Pat. 2986308 - Filed Jan 13, 1958
In combination, a tank for containing liquids, a submersible pump, an electric
motor directly coupled to said pump and apparatus for mounting said pump ...

Method and apparatus for pulse width modulation of a power supply for ...
US Pat. 6043995 - Filed Sep 9, 1998 - Centrilift
The electrical submersible pump 11 is carried by tubing string 14. ... Seal section
19 serves to further isolate and seal the electric motor housing. ...

Top entry electrical transmission safety assembly for submersible pumping
US Pat. 4627489 - Filed Nov 13, 1984 - Midway Fishing Tool Co.
TOP ENTRY ELECTRICAL TRANSMISSION SAFETY ASSEMBLY FOR SUBMERSIBLE PUMPING ...
hole to an electrically operated submersible pump that has an electric power ...

Freeze proof control center for submersible pumps
US Pat. 4664185 - Filed Aug 14, 1985
SUBMERSIBLE PUMPS Accordingly, there is a need for a pump control apparatus ....
Further, due to the cost of electrical conduit for the submersible pump. ...

Method and apparatus for increasing fluid recovery from a subterranean formation
US Pat. 6237691 - Filed Jun 8, 2000 - Kelley & Sons Group International, Inc.
Pump P drives the oil to the surface and, for this application, is preferably a
high volume electric submersible pump P to pump large flow rates of oil 5 ...

Cable banding lock ring
US Pat. 4361937 - Filed Nov 28, 1980
It is another object to provide a cable banding lock ring particularly suitable
for strapping an electric power 50 cable connected to a submersible pump to ...

Downhole electrical connector for submersible pump
US Pat. 4859200 - Filed Dec 5, 1988 - Baker Hughes Incorporated
A device for attaching an end of an electric cable to the head of a motor, the
electric cable having at least one conductor with a terminal on its end, ...

Packer with electrical conduit bypass
US Pat. 4798243 - Filed Nov 12, 1987 - Baker Hughes Incorporated
Summary of the Prior Art 10 In many subterranean wells it is desirable to mount
an electric submersible pump in the portion of the well casing that is ...

SUBMERSIBLE PUMP
US Pat. 2648286 - Filed Jul 28, 1950
A submersible electric motor operated pump, including a cylindrical shell, a
suction section and a discharge section in respective opposite ends of said ...

Method and apparatus for pumping fluids from bore holes
US Pat. 4187912 - Filed Nov 17, 1977
The design of the conventional electric submersible pump is uniquely adaptable
to the concept of the pumping being controlled by the 20 entry of fluid into ...
Extraction system with a pump having an elastic rebound inner tube
US Pat. 5058669 - Filed Sep 13, 1990 - Westinghouse Electric Corp.
The extraction system 600 also comprises a turbine or centrifugal submersible
electric pump 624 positioned below the layer of liquid hydrocarbons 607 and ...

Downhole gas compressor
US Pat. 5605193 - Filed Jun 30, 1995 - Baker Hughes Incorporated
A typical electrical submersible pump is centrifugal, having a large number ...
within motor 21 and may be considered a part of the electric motor assembly. ...

Protector for electrical submersible pumps
US Pat. 6981853 - Filed Dec 4, 2003 - Schlumberger Technology Corporation
A typical submersible pumping system comprises several components, such as a
submersible electric motor that supplies energy to a submersible pump. ...

SUBMERSIBLE ELECTRIC PUMP
US Pat. 3491695 - Filed Feb 27, 1968 -
From the foregoing, it is seen that the present invention provides a submersible
electric pump which fully accomplishes its intended objects and is well ...

System and method for improving fluid dynamics of fluid produced from a well
US Pat. 6260627 - Filed Nov 22, 1999 - Camco International, Inc.
... a submersible motor; a submersible pump powered by the submersible motor; ...
wherein positioning includes positioning an electric submersible pumping ...

Flexible electrical submersible motor pump system for deviated wells
US Pat. 5129452 - Filed Jul 22, 1991 - Oil Dynamics, Inc.
In many completed wells it is desirable to use a high flow capacity pumping system
such as a submersible electric motor powered centrifugal pump (ESP). ...

Apparatus and method for the downhole gravity separation of water and oil ...
US Pat. 6550535 - Filed Oct 25, 2000
Electrical power for the submersible pump originates from the surface, and is
provided to the submersible pump flexible electric 1 through cable 18, ...

Spacer for deep wells
US Pat. 4478278 - Filed Nov 27, 1981 - Texaco Canada Resources Ltd.
... a submersible pump that is driven by BRIEF DESCRIPTION OF THE DRAWINGS 1. ...
of a submersible pump in a deep well 15 wherein: necessity for an electric ...

Modular permanent-magnet electric motor
US Pat. 5923111 - Filed Nov 10, 1997 - Goulds Pumps, Incoporated
A modular permanent-magnet electric motor assembly producing a predetermined
maximum power output, for a submersible pump assembly having a shaft adapted to ...

Pump system
US Pat. 4541782 - Filed Feb 18, 1983 - Framo Developments (UK) Limited
1 is a simplified schematic side view of a first the pump stack and the outer
pump provides a dis- electric submersible pump system embodying the inven- ...
BILGE PUMP BY
US Pat. 3179058 - Filed Apr 10, 1963 - Delta Electric Company
40 The principal object of this invention is to provide a submersible electrical
pump of simple and inexpensive construction which will withstand the ...

Apparatus for controlling the removal of liquid hydrocarbons from groundwater
US Pat. 4761225 - Filed Aug 18, 1986
40 Another underground oil spill recovery system used is installed in one well,
and uses an electric submersible water pump to draw down the water table to ...

Method and apparatus for increasing fluid recovery from a subterranean formation
US Pat. 6325152 - Filed Jun 8, 2000 - Kelley & Sons Group International, Inc.
Pump P drives the oil to the surface and, for this application, is preferably a
high volume electric submersible pump P to pump large flow rates of oil 5 ...

ELECTRIC MOTOR WITH PLURAL COOLING PATHS THROUGH THE SHAFT O. V. PAGE
US Pat. 3267868 - Filed Nov 13, 1963 - Barnes Manufacturing Co
1 is a longitudinal sectional view of a submersible pump assembly having an
electric motor embodying the present invention; and FIG. ...

Submersible pump adapter
US Pat. 5211225 - Filed Aug 23, 1991
... an electric submersible pump at the lower end of said pipe column for pumping
water upwardly through said pipe column, said pump having an electrical ...

SUBMERSIBLE PUMP
US Pat. 3135212 - Filed Mar 29, 1962
A submersible pump and electric motor comprising 55 a cylindrical intermediate
casing closely enclosing said motor, a lower pumping casing incorporating at ...

Technique for producing a high gas-to-liquid ratio fluid
US Pat. 6547514 - Filed Jun 8, 2001 - Schlumberger Technology Corporation
The pumping system may comprise an electric submersible pumping system that
utilizes a submersible motor to power a production pump, such as a centrifugal ...

Apparatus for transmitting instrumentation signals over power conductors
US Pat. 5539375 - Filed Jul 7, 1994 - Phoenix Petroleum Services Ltd.
In some installations, an electrical submersible pump is positioned at the bottom
... system for an oil well, be the motor of an electric submersible pump. ...

Integrated pumping system for use in pumping a variety of fluids
US Pat. 6811382 - Filed Oct 3, 2001 - Schlumberger Technology Corporation
In electric submersible pumping 2o systems, a motor is coupled to a motor protector
and ultimately to a submersible pump, such as a centrifugal pump. ...
Power cable system for use in high temperature wellbore applications
US Pat. 6397945 - Filed Apr 14, 2000 - Camco International, Inc.
The electric submersible pumping system includes, among other components, a
submersible motor that powers a submersible pump. The submersible pumping system ...
UNDERWATER WELLHEAD ELECTRIC SUBMERGED ELECTRIC MOTOR DEIVEN WELL PUMPS AND ...
US Pat. 3638732 - Filed Jan 12, 1970
124 is filled with dielectric material 127 through its upper end, In running the
submersible pump 10 into the well bore, the which will surround the ...

Method and apparatus for producing viscous crudes
US Pat. 4832127 - Filed Dec 29, 1987 - Shell Western E&P Inc.
1, where a conventional electrical submersible pump assembly 10, ... The mixed
fluids then pass upwardly by the electric pump motor 11 to cool it, ...

Apparatus and method for installing a downhole electrical unit and providing ...
US Pat. 6398583 - Filed Jun 9, 2000
10 BACKGROUND OF THE INVENTION This invention is concerned with installing a
downhole electrical unit, such as a submersible electrically operated pump, ...

Submersible motor-driven pump with float switch
US Pat. 5775877 - Filed Feb 26, 1996 - ABS Pumps, Ltd.
1 illustrates an electric submersible motor-driven 10 T i • . pump 1, ...
The electric submersible motor-driven pump as defined adapter plug (20) which is ...

PROTECTIVE MEANS FOR SUBMERSIBLE PUMP-MOTORS
US Pat. 2972708 - Filed Oct 5, 1956 -
In a submersible pump-motor unit, an electric posed therein, and a heat conducting
element of rela- motor having at least one winding, means within said 15 ...

Bellows latching mechanism for a submersible pump
US Pat. 4583923 - Filed Feb 10, 1984 - Hughes Tool Company
Description of the Prior Art Submersible pumps of the type concerned herein
normally have a centrifugal pump that is driven by a submersible electric motor ...

Submersible pump with float switch
US Pat. 4021144 - Filed Sep 17, 1975 - Elepon Kabushiki Kaisha
Slidable along the sleeve 10 is an annular SUBMERSIBLE PUMP WITH FLOAT SWITCH
... of a submersible electric pump, a ates $& control circuit in the motor of ...

Submersible pump telemetry system
US Pat. 4581613 - Filed May 10, 1982 - Hughes Tool Company
1, a pump This invention relates in general to submersible 5 motor 11 is connected to
... Through pres- include a large electric motor located in the well. ...

Flexible tubing production system for well installation
US Pat. 4476923 - Filed Mar 18, 1982
A submersible pump is attached to the end of the flexible tubing and is ...
In an alternate arrangement, the downhole electric drive motor is driven by a ...

Method of operating variable-speed submersible pump unit
US Pat. 6481973 - Filed Jun 1, 2000 - Little Giant Pump Company
There is therefore a need for a submersible electric pump However, it should be
noted that the invention is not limited the speed of which can be optimized ...
ELECTRICAL COUPLER
US Pat. 3736548 - Filed Jul 28, 1971 -
The cable C above the pump P effectively ... of different standard makes of
electric 25 acte»stics of submersible pumps, the pumps produced pump structures, ...

Submersible pump and sprinkler system
US Pat. 6575714 - Filed Jun 29, 2001
US B2 SUBMERSIBLE PUMP AND SPRINKLER SYSTEM FIELD OF THE INVENTION The present
invention ... The motor shaft 15 is linked with an electric motor 20, ...

Resheathable cable armor
US Pat. 6541706 - Filed Feb 7, 2001 - Schlumberger Technology Corporation
The pumping system may be an electric submersible pumping system 10. Typically,
system 10 includes at least a submersible pump 12, such as a centrifugal ...

Modular motor and housing
US Pat. 6794788 - Filed May 26, 2000 - Schlumberger Technology Corporation
However, submersible pumping system 20 typically includes a submersible motor,
such as modular electric motor 22, to drive a submersible pump 24. ...

Electrical connector and pump assembly utilizing same
US Pat. 5304073 - Filed Jun 5, 1992 - Carr-Griff, Inc.
One kind of submersible pump is powered by an electric motor. In the absence of
utility company power, energy to drive the motors can be coupling means ...

Method and apparatus for increasing fluid recovery from a subterranean formation
US Pat. 6622791 - Filed Oct 23, 2001 - Kelley & Sons Group International, Robert E. Snyder
Pump P drives the oil to the surface and, for this application, is preferably a
high volume electric submersible pump P to pump large flow rates of oil ...

Well management system
US Pat. 6257332 - Filed Sep 14, 1999 - Halliburton Energy Services, Inc.
An electric conductor transmits electric signals and a hydraulic line ... See for
example the paper entitled "Electric Submersible Pump for Subsea Completed ...

Wellbore liquid recovery apparatus and method
US Pat. 5128052 - Filed Jan 15, 1991
Where a submersible electric pump was used to lift the collected hydrocarbon
liquids, downhole level controls were required to operate the submersible pump ...

METHOD AND APPARATUS FOR LIFTING FOAMING CRUDE BY A VARIABLE RPM SUBMERSIBLE ...
US Pat. 3568771
Field of the Invention 5 in the speed of the submersible pump. foamy crude ...
the bottom hole pressure both a submersible centrifugal pump and an electric ...

Technique for facilitating the pumping of fluids by lowering fluid viscosity
US Pat. 6564874 - Filed Jul 11, 2001 - Schlumberger Technology Corporation
3 is a front elevational view of an exemplary electric go submersible pumping
system that may be used to pump fluids within a wellbore; FIG. ...
Oil detection apparatus for submersible pumps
US Pat. 4715785 - Filed Mar 14, 1986 - Richal Corporation
Accordingly, this invention discloses an apparatus 35 which is usable with a
water submersible pump of the type used by an electric utility in a transformer ...

Method and apparatus for reducing the amount of formation water in oil ...
US Pat. 5296153 - Filed Feb 3, 1993
6, dual stream pump 14 is an electric submersible centrifugal pump. Movable member
30a is in the form of an impeller shaft having a plurality of impeller ...

SUBMERSIBLE PUMP
US Pat. 3748066 - Filed Dec 13, 1971
The pump is ally such pumps are driven by an electric motor dis- denoted ...
11 to extend in a provide an improved submersible pump adapted to generally ...

Hydraulic turbine power generator incorporating axial thrust equalization means
US Pat. 5659205 - Filed Jan 11, 1996 - EBARA International Corporation
electric power generator is p^^ably in the form of A related known prior art ...
The EBARA submersible pump and thrust despite the variations of the input ...

SUBMERSIBLE PUMPS
US Pat. 3427982 - Filed Sep 25, 1967 - Flygt Corporation
30 Another object of the invention is to provide such submersible pump ...
a sealed pump and electric drive motor combination not shown in the figures. ...

Pothead connector with elastomeric sealing washer
US Pat. 6676447 - Filed Jul 18, 2002 - Baker Hughes Incorporated
More specifically, the present invention relates to a pothead connector for
connecting an insulted power cable to the motor of an electric submersible pump. ...

SUBMERSIBLE PUMP ASSEMBLY
US Pat. 3635606 - Filed Dec 22, 1969 -
A submersible electric motor-pump assembly, having a device can be formed due to
the fact that the lower end of the drive motor and a pump connected ...

Spool assembly for field adjustable column length pump systems
US Pat. 5611680 - Filed Dec 18, 1995 - The Marley Company
1, numeral 10 generally designates a submersible electric pump/motor unit of the
type used in pumping systems which operate to pump gasoline from ...

Assembly for sealing and pressure equalization of a submersible housing
US Pat. 4015633 - Filed Oct 17, 1975 - Sta-Rite Industries, Inc.
A housing enclosing an electric invention with an improved assembly for sealing and
... A typical submersible pump motor 15 FIG. is a partly broken away, ...

Dry-pit submersible pump having a fan and a torque-relieving mechanism
US Pat. 6079958 - Filed Oct 3, 1997 - Roper Holdings, Inc.
1 is a side view of a fan-cooled dry-pit submersible pump according to the present
invention. FIG. 2 is a sectional view of the electric motor of the ...
Submersible pump controller for differentiating fluids
US Pat. 6203281 - Filed Oct 29, 1999 - Richal Corporation
US Bl 1 2 SUBMERSIBLE PUMP CONTROLLER FOR example, if the detection of oil relies on
... For example, electric utilities commonly use water " SUMMARY OF THE ...

Downhole gas compressor
US Pat. 5755288 - Filed Jan 17, 1997 - Baker Hughes Incorporated
A typical electrical submersible pump is centrifugal, having a large number ...
within motor 21 and may be considered a part of the electric motor assembly. ...

Portable water tank and booster
US Pat. 6152707 - Filed May 20, 1998
... tank having an access cover and a water discharge pipe; b. a submersible pump
... and e. electric circuit means connected to the pressure switch and to ...

Casing construction for fuel dispensing systems
US Pat. 6223765 - Filed Oct 9, 1997 - Marley Pump
A submersible electric pump operates to pump the fuel through a vertical column
pipe when the 15 dispenser is activated. The fuel is then delivered to a ...

Flexible tubing cable system
US Pat. 4665281 - Filed Mar 11, 1985
Another "Electric Cable" is shown and described in ™ • *• r A n • A . us- ...
the standard submersible pump- M h tures and ^ conductor pairs of high. ing ...

Standoff insulator and method for well pump cable
US Pat. 5553666 - Filed Jun 6, 1995 - Atlantic Richfield Company
... by the provision of a submersible electric motor-driven multistage pump ...
for support of the power cable for submersible pump-type well installations ...

Oil Detection method and apparatus for a pump submerged in a transformer vault
US Pat. 4752188 - Filed Jul 24, 1987 - Richal Corporation
Accordingly, this invention discloses an apparatus which is usable with a water
submersible pump of the 40 type used by an electric utility hi a transformer ...

[APPLICATION] Neural network model for electric submersible pump system
US Pat. App 10/644,073 - Filed Aug 18, 2003
24,2005 (54) NEURAL NETWORK MODEL FOR ELECTRIC SUBMERSIBLE PUMP SYSTEM (76)
Inventors: ... for modeling an electric submersible pump using a neural network, ...

[APPLICATION] Neural network model for electric submersible pump system
US Pat. App 11/195,080 - Filed Aug 2, 2005
... submersible pump using a neural network, data from a deterministic model, and,
optionally, data obtained from a real world electric submersible pump. ...
Neural network model for electric submersible pump system
US Pat. 6947870 - Filed Aug 18, 2003 - Baker Hughes Incorporated
Claims, 3 Drawing Sheets-- GENERATE A TRAINING DATA SET COMPRISING DATA REPRESENTATIVE
OF AN ELECTRIC SUBMERSIBLE PUMP APPLICATION, THE DATA RELATED TO AT ...
Low flow rate oil supply system for an electric submersible pump
US Pat. 5375656 - Filed Oct 14, 1992 - Oil Dynamics, Inc.
ELECTRIC SUBMERSIBLE PUMP expanded by tapering the capillary tubing string,
preferably, but not necessarily, using a larger inner diameter This invention ...

[APPLICATION] Electric submersible pumps
US Pat. App 10/562,255 - Filed Jun 21, 2004
29,2007 (54) ELECTRIC SUBMERSIBLE PUMPS (76) Inventor: Michael Andrew ...
comprising the steps of: installing an electric submersible pump in a wellbore; ...

[APPLICATION] Electric submersible pumps
US Pat. App 10/562,073 - Filed Jun 21, 2004
Date: May 3,2007 (54) ELECTRIC SUBMERSIBLE PUMPS (76) Inventor: Michael Andrew
... 310/90 (57) ABSTRACT A downhole electric motor for a submersible pump has ...

[APPLICATION] Electric submersible pumps
US Pat. App 10562072 - Filed Jun 21, 2004 - WEATHERFORD/LAMB, INC.
... 43/00 (2006.01) (52) US Cl. (57) ABSTRACT/381;/68.5 An electric submersible
pump contains an AC permanent magnet motor having three or more phases A, B, ...

AUTOMATIC SUBMERSIBLE PUMP
US Pat. 3472168 - Filed Mar 26, 1968
The above described structure has no substantial difference from an automatic
submersible pump equipped with a water level control device of the electric ...

Hydrodynamic bearing runner for use in tilting pad thrust bearing assemblies ...
US Pat. 7163368 - Filed Feb 26, 2004
For electric submersible pump seal sections, the direction of loading may be in
two opposite directions. 65 Hydrodynamic bearings are therefore spaced on ...

Wind-electric water pumping system
US Pat. 5174724 - Filed Sep 18, 1991
24 shows the complete wiring diagram of the Wind-Electric Water Pumping System.
... Where a 19 stage submersible pump must use at least 1£ horsepower to ...

Pressurized seal for submersible pumps
US Pat. 6422822 - Filed Jun 15, 2000 - Shell Oil Company
The metal bellows is sealed at the pump shaft 13 by o-ring 52f. ... A submersible
pumping system comprising: an electric motor enclosed in a sealed housing ...

[APPLICATION] Hydrodynamic bearing runner for use in tilting pad thrust bearing assemblies ...
US Pat. App 10/786,127 - Filed Feb 26, 2004
One embodiment of the invention provides an electrical submersible pump that
includes a motor ... The pump is powered by an electric cable that connects ...

Electric submersible pump potheads are male electrical connectors used in oil wells. After connecting a pothead with submersible pump electrical cable, the cable conductors and the pothead pins or contacts must be electrically tested. The tests may be conducted under laboratory conditions; however, it is often necessary to test the connection at the field site. Various tests are usually conducted, including an insulation resistance test, a DC voltage test to measure microamp leakage and an AC voltage test to measure milliamp leakage.

Some potheads have metallic faces from which the contacts extend. When the conductors and contacts are electrically tested, flashover may occur between the contacts and the pothead face if the contacts are not insulated.

Typically, to insulate the contacts, a silicon test fixture is filled with clean, highly insulating dielectric silicon oil. The pothead is submersed within the filled fixture before electrically testing the connection between the contacts and conduit cable. Although this method works adequately in a laboratory setting, problems arise, such as damage to the pothead cable due to bending, when performing the tests in the field under much more adverse conditions.

Some pothead faces are molded from rubber, thereby eliminating the need to submerse the pothead in the silicon fixture during testing. However, these potheads are limited to a single use. They cannot be reused after being submersed in an oil well, even if submersed for only one day, because of oil swell to the rubber.