WO2014131563A1 - Bohrloch-fördervorrichtung - Google Patents
Bohrloch-fördervorrichtung Download PDFInfo
- Publication number
- WO2014131563A1 WO2014131563A1 PCT/EP2014/051671 EP2014051671W WO2014131563A1 WO 2014131563 A1 WO2014131563 A1 WO 2014131563A1 EP 2014051671 W EP2014051671 W EP 2014051671W WO 2014131563 A1 WO2014131563 A1 WO 2014131563A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chamber
- self
- supply device
- unit
- sufficient supply
- Prior art date
Links
- 238000005086 pumping Methods 0.000 title abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000000903 blocking effect Effects 0.000 claims abstract description 9
- 230000004888 barrier function Effects 0.000 claims description 7
- 238000010276 construction Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/128—Adaptation of pump systems with down-hole electric drives
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/38—Arrangements for separating materials produced by the well in the well
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
- F04B19/20—Other positive-displacement pumps
- F04B19/22—Other positive-displacement pumps of reciprocating-piston type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
Definitions
- the present invention relates to a downhole conveyor for conveying media from a wellbore.
- Borehole conveyors are known in the prior art in various configurations. Such conveyors are used in wells and used in particular for the production of oil. The well conveyors are thereby lowered down to near the bottom of the well into the wellbore and pump the medium to be pumped via a guided through the well pipe to the surface.
- the pump used in this case is usually driven by means of an electric drive. This results in the problem of sealing a shaft which connects the electric drive with the pump. Since the well-carrier is usually arranged very deep, a seal must be ensured over a long period, as an exchange of a Seal with very high cost and in particular also conveyor failure is connected. Therefore, in the prior art, a variety of glands connected in series have been used to make a seal on the shaft.
- the borehole conveyor according to the invention for conveying media from a borehole with the features of claim 1 has the advantage that a very long, multi-year life of a mechanical seal unit can be ensured, so that without hesitation use in a deep hole is possible.
- the wellbore conveyor according to the invention further has a very compact construction and there are only minimal connection lines between the wellbore conveyor and the earth's surface necessary.
- a mechanical seal unit according to the invention is proposed with a mechanical seal, which performs the sealing on a shaft connecting a drive and a pump unit shaft.
- the drive is preferably an electric drive.
- a self-sufficient supply device which supplies the mechanical seal with a blocking medium for blocking and / or lubricating a sealing gap between a rotating and a stationary sliding ring of the mechanical seal.
- the self-sufficient supply device is integrated together with the pump, the mechanical seal unit, the shaft and the drive in a compact conveyor unit, wherein the conveyor unit is completely retractable in the borehole.
- the borehole conveying device according to the invention has as connection to the earth surface only a pumping line, via which the medium to be pumped is pumped to the earth's surface, and when using an electric drive, a power line, which supplies the electric drive with electrical energy.
- the present invention enables the use of a mechanical seal assembly in a deep borehole, which can autonomously ensure multi-year operation.
- the supply device of the well conveyor is arranged at one end of the compact conveyor unit. In this way, in particular a small distance between the drive and the pump and thus also a short wavelength of the shaft connecting the pump and the drive can be ensured.
- the supply device is arranged at a free end of the conveyor unit. The free end is preferably the end of the conveyor unit, which is located deepest in the borehole.
- the drive is arranged in the axial direction of the delivery unit between the supply device and the mechanical seal unit.
- the self-sufficient supply unit preferably comprises a first chamber for receiving the blocking medium, a second chamber which is filled with medium and a bellows which separates the first chamber from the second chamber in a media-tight manner.
- the second chamber is connected to an outer side of the well-conveying device, so that in the second chamber, a pressure prevails, which corresponds to the pressure of the medium to be pumped in the borehole (ambient pressure).
- the second chamber is preferably filled with the medium to be delivered.
- the wide chamber with a viscous medium which is viscous than the medium to be delivered, z.
- the self-sufficient supply unit comprises a piston element, which is arranged on the bellows such that the bellows and the piston element form a cup-shaped unit.
- the first chamber is arranged inside the cup-shaped unit.
- the second chamber is provided between the outside of the pot-shaped unit and a housing of the supply unit.
- the housing preferably has an opening, via which a connection with the outside of the borehole conveying device is provided, so that a pressure in the second chamber corresponds to an external pressure in the borehole and the medium containing borehole is contained in the second chamber.
- the use of the piston element in the self-contained supply device makes it possible to set a defined pressure in the first chamber containing the barrier medium, which is always above the pressure in the second chamber, ie the borehole pressure. As a result, a permanent loading of the mechanical seal is achieved with a higher pressure than the borehole pressure, so that a secure seal is achieved.
- the self-sufficient supply unit furthermore preferably comprises a biasing element which permanently biases the blocking medium in the first chamber.
- the biasing element is preferably a spring, in particular a Coil spring.
- the biasing member is particularly preferably applied to the piston, so that damage to the bellows can be reliably prevented.
- the drive is an electric drive
- a connecting line between the supply device and the mechanical seal unit extends through the electric drive.
- the connecting line could also be guided around as a bypass to the electric drive.
- the self-sufficient supply device further comprises a third chamber, wherein the third chamber is completely closed media-tight.
- the third chamber is preferably filled with an incompressible medium and more preferably filled with oil. More preferably, a pressure in the third chamber is equal to or greater than a pressure in the first and / or second chamber.
- the third chamber is preferably arranged on the outside of the bellows of the self-sufficient supply device, whereby the bellows is stabilized.
- the well-conveying device further comprises a separator for separating gaseous components from the medium to be conveyed.
- the separator is also integrated into the compact delivery unit.
- the separator is arranged immediately in front of the pump.
- the borehole conveyor device according to the invention is preferably used for oil extraction.
- the borehole conveyor according to the invention can be used in particular at very great depths and can have a life of five years and more. An even longer life can be ensured if the sliding surfaces of the seal rings are preferably coated with diamond.
- FIG. 1 is a schematic representation of a well-conveying device according to a first embodiment of the invention
- Fig. 2 is a schematic, partially sectioned view of a self-sufficient
- Fig. 3 is a schematic, partially sectioned view of a well conveyor with a self-sufficient supply device according to a second embodiment of the invention.
- the borehole conveyor 1 is arranged in a borehole 8 in order to convey a medium 9 which is located in the borehole 8.
- the well-conveying device 1 comprises an electric drive 2, which drives a pump 3 via a shaft 4.
- An engine compartment, in which a motor M of the electric drive is arranged, is sealed to the shaft 4 by means of a mechanical seal unit 5.
- the well-conveying device 1 comprises a self-sufficient supply device 6, which supplies a mechanical seal 50 of the mechanical seal unit 5 with a barrier medium.
- the mechanical seal comprises a rotating slide ring 51 and a stationary slide ring 52, wherein a sealing gap 53 is formed between the two slide rings.
- the self-sufficient supply device 6 is connected via a connecting line 12 with the mechanical seal 50 in order to supply the barrier fluid to the mechanical seal 50.
- the connecting line 12 in this case leads through the electric drive 2 (see Fig. 1).
- the downhole conveyor 1 further includes a separator 10 disposed in front of the pump 3 and integrated with the downhole conveyor. Furthermore, the separator 10 has a plurality of inflow openings 11, via which the medium 9 to be conveyed passes into the separator 10, so that optionally gaseous constituents containing 9 can be separated in the medium 9 to be conveyed. The removed from gaseous components medium 9 is then conveyed by the pump 3 in a delivery line 7, which leads to the earth's surface.
- the self-sufficient supply device 6, the electric drive 2, the pump 3, the shaft 4 and the mechanical seal unit 5 form a compact conveyor unit, which is completely submerged in the borehole.
- the components of the compact conveyor unit are arranged in series in the axial direction X-X.
- Fig. 2 shows in detail the self-sufficient supply device 6.
- the self-sufficient supply device 6 is arranged at a free end of the borehole conveyor device 1.
- the supply device 6, the pump 3, the electric drive 2, the shaft 4 and the mechanical seal unit 5 thereby form a compact delivery unit, which is completely retractable in the wellbore 8.
- the self-sufficient supply device 6 comprises a first chamber 61, a second chamber 62 and a bellows 67. Furthermore, the self-sufficient supply device 6 comprises a piston 64 and a biasing element 65, which in this embodiment is a spring. In a housing 60 of the supply device 6, a connection opening 66 is further provided, so that a connection between the second chamber 62 and the borehole, in which the medium to be conveyed 9 is made. Thus, the same pressure prevails in the second chamber 62 as in the borehole 8.
- the bellows 67 separates the first chamber 61 from the second chamber 62 media-tight.
- the piston 64 is arranged at an open end of the bellows 67, so that the bellows 67 together with the piston 64 forms a pot-shaped unit, which is arranged on an inner side of the housing 60 of the self-sufficient supply device 6.
- the first chamber 61 is connected to the connecting line 12, which leads to the mechanical seal 50.
- the biasing member 65 is supported at one end on an inner side of the housing 60 and at another end on the piston 64. As a result, the biasing member 65 exerts a biasing force F on the piston 64.
- a first pressure P1 in the first chamber 61 is permanently greater than a second pressure P2 in the second chamber 62.
- an overpressure on the mechanical seal 50 is ensured, so that it is not possible that the medium from the outside through the sealing gap 53rd the mechanical seal 50 passes.
- a maximum life of the mechanical seal 50 can be obtained by using the barrier medium from the first chamber 61.
- the first chamber 61 is designed such that the barrier medium contained therein is sufficient for a service life of several years. Thus, a leakage through the sealing gap 53 to the outside (arrow L) over several years can be compensated.
- Fig. 3 shows a borehole conveyor 1 according to a second embodiment of the invention, wherein identical or functionally identical parts are denoted by the same reference numerals as in the first embodiment.
- the self-sufficient supply device 6 of the second exemplary embodiment additionally comprises, in addition to the first chamber 61 and the second chamber 62, a third chamber 63.
- the third chamber 63 is completely media-tight.
- the third chamber 63 is formed both on the outside of the first chamber 61 and the outside of the second chamber 62.
- a first bellows 67 on a first side of the piston 64 and a second bellows 68 on a second side of the piston 64 opposite the first side are arranged to form the first and second chambers.
- the third chamber 63 is filled with a medium, preferably oil, and a third pressure P3 in the third chamber 63 is greater than a first pressure P1 in the first chamber 61 and greater than a second pressure P2 in the second chamber 62.
- Um To ensure a mobility of the piston 64, the piston has a plurality of through holes 64a. Further, a biasing member 65 is provided to hold the barrier medium in the first chamber 61 under pressure.
- the second bellows 68 could be formed as a biasing element. By this construction, it can be achieved that both the first bellows 67 and the second bellows 68 are supported by the medium contained in the third chamber 63. Furthermore, an additional damping possibility of the bellows 67, 68 is achieved by the medium contained in the third chamber 63. Thus, in particular, pressure fluctuations within the borehole do not lead to damage to the self-sufficient supply device 6.
- the borehole conveyor device 1 thus has an integrated, self-sufficient supply device 6, so that a mechanical seal 50 can be operated without damage for several years.
- the self-sufficient supply device 6 ensures that no medium to be conveyed or the like can get into an engine compartment of the electric drive 2, which is usually filled with a dielectric.
- the electric drive can also have a runtime of several years.
- the borehole conveying device 1 can remain in the borehole 8 for several years and fulfill conveying tasks.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Mechanical Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201480008410.9A CN105008659B (zh) | 2013-02-26 | 2014-01-29 | 井筒传送设备 |
US14/762,354 US20150354328A1 (en) | 2013-02-26 | 2014-01-29 | Wellbore conveyor device |
EP14702524.1A EP2961921A1 (de) | 2013-02-26 | 2014-01-29 | Bohrloch-fördervorrichtung |
RU2015140830A RU2615542C2 (ru) | 2013-02-26 | 2014-01-29 | Транспортное устройство для скважины |
MX2015011018A MX2015011018A (es) | 2013-02-26 | 2014-01-29 | Dispositivo transportador de sondeo. |
CA2896606A CA2896606C (en) | 2013-02-26 | 2014-01-29 | Wellbore conveyor device |
BR112015020530A BR112015020530A2 (pt) | 2013-02-26 | 2014-01-29 | dispositivo de transporte em furo de poço |
SG11201506338TA SG11201506338TA (en) | 2013-02-26 | 2014-01-29 | Wellbore conveyor device |
ZA2015/04929A ZA201504929B (en) | 2013-02-26 | 2015-07-09 | Wellbore conveyor device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013003445.0A DE102013003445A1 (de) | 2013-02-26 | 2013-02-26 | Bohrloch-Fördervorrichtung |
DE102013003445.0 | 2013-02-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014131563A1 true WO2014131563A1 (de) | 2014-09-04 |
Family
ID=50033514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/051671 WO2014131563A1 (de) | 2013-02-26 | 2014-01-29 | Bohrloch-fördervorrichtung |
Country Status (11)
Country | Link |
---|---|
US (1) | US20150354328A1 (de) |
EP (1) | EP2961921A1 (de) |
CN (1) | CN105008659B (de) |
BR (1) | BR112015020530A2 (de) |
CA (1) | CA2896606C (de) |
DE (1) | DE102013003445A1 (de) |
MX (1) | MX2015011018A (de) |
RU (1) | RU2615542C2 (de) |
SG (1) | SG11201506338TA (de) |
WO (1) | WO2014131563A1 (de) |
ZA (1) | ZA201504929B (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9988887B2 (en) * | 2014-05-08 | 2018-06-05 | Baker Hughes, A Ge Company, Llc | Metal bellows equalizer capacity monitoring system |
EP3402961B1 (de) | 2016-01-16 | 2023-03-01 | Accessesp UK Limited | Flaches, druckausgeglichenes, ölausdehnungskompensiertes elektrisches bohrlochverbindungssystem |
US11572743B2 (en) | 2016-01-16 | 2023-02-07 | Accessesp Uk Limited | Method and apparatus for testing of the downhole connector electrical system during installation |
DE102016210173B4 (de) | 2016-06-09 | 2018-02-22 | Eagleburgmann Germany Gmbh & Co. Kg | Gleitringdichtungsanordnung sowie Bohrloch-Fördervorrichtung |
CN108223331B (zh) * | 2018-01-06 | 2023-12-26 | 西南石油大学 | 一种有杆抽油泵与地面驱动螺杆泵组合式抽油系统 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4992689A (en) * | 1989-11-29 | 1991-02-12 | Camco, Inc. | Modular protector apparatus for oil-filled submergible electric motors |
US5367214A (en) * | 1992-11-18 | 1994-11-22 | Turner Jr John W | Submersible motor protection apparatus |
US20020192090A1 (en) * | 2001-06-18 | 2002-12-19 | Du Michael H. | Protector for electrical submersible pumps |
US20070059166A1 (en) * | 2005-09-14 | 2007-03-15 | Schlumberger Technology Corporation | Pump Apparatus and Methods of Making and Using Same |
US20080078560A1 (en) * | 2006-10-02 | 2008-04-03 | Kevin Hall | Motor seal |
US20110194949A1 (en) | 2010-02-05 | 2011-08-11 | Baker Hughes Incorporated | Compensating Mechanical Seal For Use With A Downhole Electrical Submersible Pump |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2115991C1 (ru) * | 1995-12-05 | 1998-07-20 | Игорь Иванович Белоконь | Погружной заполненный жидкостью электродвигатель |
US5796197A (en) * | 1996-12-09 | 1998-08-18 | Franklin Electric Co., Inc. | Submersible motor sealing system |
RU2188970C1 (ru) * | 2001-04-05 | 2002-09-10 | Зиновий Дмитриевич Хоминец | Скважинная струйная установка |
RU26995U1 (ru) * | 2002-07-15 | 2003-01-10 | Уфимский государственный нефтяной технический университет | Станок хонинговальный с импульсным пневмо-механическим разжимом брусков |
US7654315B2 (en) * | 2005-09-30 | 2010-02-02 | Schlumberger Technology Corporation | Apparatus, pumping system incorporating same, and methods of protecting pump components |
US7665975B2 (en) * | 2005-12-20 | 2010-02-23 | Baker Hughes Incorporated | Seal section oil seal for submersible pump assembly |
RU68801U1 (ru) * | 2007-06-27 | 2007-11-27 | Общество с ограниченной ответственностью "Лысьвенский завод нефтяного машиностроения" | Устройство для гидравлической защиты погружного маслозаполненного электродвигателя |
CN201460787U (zh) * | 2009-07-16 | 2010-05-12 | 徐元信 | 一种油管喷提密封装置 |
-
2013
- 2013-02-26 DE DE102013003445.0A patent/DE102013003445A1/de not_active Withdrawn
-
2014
- 2014-01-29 MX MX2015011018A patent/MX2015011018A/es unknown
- 2014-01-29 RU RU2015140830A patent/RU2615542C2/ru not_active IP Right Cessation
- 2014-01-29 BR BR112015020530A patent/BR112015020530A2/pt not_active IP Right Cessation
- 2014-01-29 CN CN201480008410.9A patent/CN105008659B/zh not_active Expired - Fee Related
- 2014-01-29 US US14/762,354 patent/US20150354328A1/en not_active Abandoned
- 2014-01-29 SG SG11201506338TA patent/SG11201506338TA/en unknown
- 2014-01-29 WO PCT/EP2014/051671 patent/WO2014131563A1/de active Application Filing
- 2014-01-29 CA CA2896606A patent/CA2896606C/en not_active Expired - Fee Related
- 2014-01-29 EP EP14702524.1A patent/EP2961921A1/de not_active Withdrawn
-
2015
- 2015-07-09 ZA ZA2015/04929A patent/ZA201504929B/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4992689A (en) * | 1989-11-29 | 1991-02-12 | Camco, Inc. | Modular protector apparatus for oil-filled submergible electric motors |
US5367214A (en) * | 1992-11-18 | 1994-11-22 | Turner Jr John W | Submersible motor protection apparatus |
US20020192090A1 (en) * | 2001-06-18 | 2002-12-19 | Du Michael H. | Protector for electrical submersible pumps |
US20070059166A1 (en) * | 2005-09-14 | 2007-03-15 | Schlumberger Technology Corporation | Pump Apparatus and Methods of Making and Using Same |
US20080078560A1 (en) * | 2006-10-02 | 2008-04-03 | Kevin Hall | Motor seal |
US20110194949A1 (en) | 2010-02-05 | 2011-08-11 | Baker Hughes Incorporated | Compensating Mechanical Seal For Use With A Downhole Electrical Submersible Pump |
Also Published As
Publication number | Publication date |
---|---|
MX2015011018A (es) | 2015-10-22 |
CA2896606A1 (en) | 2014-08-26 |
RU2015140830A (ru) | 2017-03-31 |
EP2961921A1 (de) | 2016-01-06 |
ZA201504929B (en) | 2016-06-29 |
SG11201506338TA (en) | 2015-09-29 |
US20150354328A1 (en) | 2015-12-10 |
BR112015020530A2 (pt) | 2017-07-18 |
CN105008659B (zh) | 2017-10-03 |
CN105008659A (zh) | 2015-10-28 |
DE102013003445A1 (de) | 2014-09-11 |
CA2896606C (en) | 2017-09-05 |
RU2615542C2 (ru) | 2017-04-05 |
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