US20070086906A1 - Surface pump assembly - Google Patents
Surface pump assembly Download PDFInfo
- Publication number
- US20070086906A1 US20070086906A1 US11/250,922 US25092205A US2007086906A1 US 20070086906 A1 US20070086906 A1 US 20070086906A1 US 25092205 A US25092205 A US 25092205A US 2007086906 A1 US2007086906 A1 US 2007086906A1
- Authority
- US
- United States
- Prior art keywords
- pump
- pump assembly
- motor
- impellers
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000012530 fluid Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000008439 repair process Effects 0.000 description 5
- 238000005086 pumping Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/041—Axial thrust balancing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/041—Axial thrust balancing
- F04D29/0413—Axial thrust balancing hydrostatic; hydrodynamic thrust bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2210/00—Working fluid
- F05B2210/10—Kind or type
- F05B2210/11—Kind or type liquid, i.e. incompressible
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/90—Mounting on supporting structures or systems
Abstract
Description
- 1. Field of the Invention
- Embodiments of the present invention generally relate to a surface pump assembly for transferring fluids into or out of a well or pipeline. Particularly, embodiments of the present invention relate to a horizontal pump assembly having a centrifugal pump connected to a motor.
- 2. Description of the Related Art
- In oil field applications fluid, like water or oil, is often pressurized and moved either between surface locations or is moved from a surface location to at least one downhole location. For example, there are instances where collected oil must be transported to a remotely located processing facility. In other instances, water is pumped down an injection well for disposal or for maintaining or increasing reservoir pressure in enhanced recovery operations or to encourage the flow of oil in underground formations to another well for recovery. In still other instances, pressurized water is injected into a wellbore to become mixed with oil and bring the oil to the surface of the well where it is separated from the water and collected.
- Pumping oil out of a well that does not have adequate natural formation pressure is conventionally done through the use of an electric submersible pump located in the wellbore. The pumps operate at the end of a tubular string and include a pump and an electric motor along with a source of electrical power supplied from the surface to operate the electric motor. Because they operate in fluid at the bottom of a wellbore, electric submersible pumps are necessarily more expensive than conventional surface-mounted pumps. Additionally, repair or replacement of a submersible pump requires the removal of the entire pump assembly.
- Multistage centrifugal pumps, which are similar to electrical submersible pumps, have been used at the surface to inject fluid into the wellbore. These surface mounted pumps are generally mounted horizontally with an electric motor and a thrust chamber. One advantage of the surface mounted pump is that the motor is less expensive than a downhole motor and the apparatus can be accessed for repair or replacement without pulling it out of a wellbore.
- One problem associated with the surface mounted pump is that the seal between the intake chamber of the pump and the thrust chamber requires repair or replacement due to wear. The repair usually involves removing the entire thrust chamber from the pump. During the repair, the pump will be inoperable. In addition, assembly of the pump is complicated because the pump and the motor must be individually aligned with the thrust chamber.
- There is a need, therefore, for an improved surface pump assembly. There is also a need for a horizontal pump having a centrifugal pump connected to a motor without a thrust chamber.
- In one embodiment, a pump assembly includes a motor, a pump, and a shaft coupled to the motor and adapted to rotate the impeller, wherein a thrust load from the pump is transmitted to the motor. Preferably, the pump includes an inlet, an outlet, and at least one impeller.
- In another embodiment, a method of transporting a fluid includes providing a pump assembly having a pump having a plurality of impellers; a motor for operating the impellers; and a shaft for transmitting torque to the impellers. The method also includes rotating the impellers; increasing the pressure of the fluid flowing through the pump; transmitting a thrust load from the pump to the motor; and transporting the fluid through the pump.
- In another embodiment, a surface mounted pump assembly comprises a centrifugal pump having a plurality of impellers and an electric motor adapted to drive the pump such that a thrust load from the pump is transmitted to the pump.
- In one or more of the embodiments disclosed herein, the motor comprises a bearing that is effective to support the thrust load.
- In one or more of the embodiments disclosed herein, the motor comprises angular contact bearings.
- In one or more of the embodiments disclosed herein, the pump assembly includes a mechanical seal adapted to seal the shaft against the atmosphere.
- In one or more of the embodiments disclosed herein, the mechanical seal comprises a thrust bearing to support at least a portion of the thrust load.
- In one or more of the embodiments disclosed herein, the shaft is coupled to the motor outside of the pump.
- In one or more of the embodiments disclosed herein, the pump assembly is horizontally mounted.
- In one or more of the embodiments disclosed herein, the pump assembly is mounted on a skid.
- In one or more of the embodiments disclosed herein, the pump assembly is disposed on the surface of a well.
- So that the manner in which the above recited features of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only typical embodiments of this invention and are therefore not to be considered limiting of its scope, for the invention may admit to other equally effective embodiments.
-
FIG. 1 is a schematic view of one embodiment of a surface pump assembly. -
FIG. 2 is a cross-sectional view of the surface pump assembly ofFIG. 1 . -
FIG. 3 is a partial cross-sectional view of the centrifugal pump. -
FIG. 1 is a schematic view of one embodiment of asurface pump assembly 100.FIG. 2 is a cross-sectional view of thesurface pump assembly 100. As shown, thesurface pump assembly 100 is horizontally mounted and includes acentrifugal pump 110 driven by anelectric motor 120. Thepump 110 is supported on askid 105 by a plurality ofsupport members 115. Thesupport members 115 are adapted to prevent rotation of thepump housing 125 of thepump 110. In one embodiment, thesupport members 115 comprise clamp assemblies that can be bolted to theskid 105. - The
pump 110 is coupled directly to themotor 120. As shown, abell housing 123 connects themotor 120 to theintake chamber 127 of thepump 110. Acoupling 130 is used to couple to themotor 120 to theshaft 135, which extends from thebell housing 123 into thepump 110. Themotor 120 rotates theshaft 135 to drive thepump 110. One ormore seal assemblies 140 are provided to seal around theshaft 135 as it passes through thebell housing 123 and theintake chamber 127. Any suitable seal assembly may be used so long as it is capable of sealing theintake chamber 127 from atmosphere. In one embodiment, theseal assembly 140 is a conventional mechanical seal. The mechanical seal can be a double seal having a buffer fluid supplied from an external pressurization source. In this embodiment, the buffer fluid is retained in a reservoir connected to theskid 105. Theseal assembly 140 may optionally includethrust bearings 147 to absorb thrust from thepump 110. As shown inFIG. 2 , the motor-shaft coupling 130 is advantageously positioned outside of the pumped fluid. As a result, thecoupling 130 may be manufactured from a lesser expensive material. - In one embodiment, the
pump 110 for thesurface pump assembly 100 is a multistage centrifugal pump. Thepump 110 includes thepump housing 125 connected to theintake chamber 127 at one end and adischarge flange 126 at another.FIG. 3 is a partial cross-sectional view of thepump 110. Disposed within thehousing 125 is at least onediffuser 142 coupled to animpeller 144, the combination of which is commonly referred to as a “stage” 150. Theimpeller 144 is adapted for rotation by theshaft 135. Eachimpeller 144 is tightly fitted onto theshaft 135 and connected to theshaft 135 using a suitable connection mechanism, for example, a spline connection. Theimpeller 144 typically includes a plurality of vanes which impart momentum/velocity to the fluid, when theimpeller 144 is rotated about its axis within thediffuser 142. The interaction of the fluid with thediffuser 142 converts this velocity to pressure. In this manner, the fluid pressure exiting the discharge flanged 126 may be increased. - A single stage of
diffuser 142 andimpeller 144 typically cannot impart the desired momentum to the fluid. Therefore, thepump 110 typically includes a plurality, or multistage, ofsuch diffuser 142 andimpeller 144 combinations. As shown, thediffusers 142 are aligned such that the centerlines of each ofimpellers 144 are collinear. Theoutlet 152 of eachstage 150 delivers pumped fluid to thesuction inlet 153 of thenext stage 150. The first stage has the opening for receiving fluid from theintake chamber 127, and the final stage has an outlet for discharging the pumped fluid. Eachdiffuser 142 is configured to enable the serial interconnection of theimpellers 144. Preferably, eachimpeller 144 includes a central hub, having a plurality of vanes extending therefrom. In one embodiment, the hub of theimpeller 144 includes a recessed female portion adapted to mate with a splined male portion of anadjacent impeller 144. In this respect, the series ofimpellers 144 may be commonly rotated by theshaft 135. Typically, thepump 110 will include a sufficient number of stages, such that eachstage 150 supplies the fluid at an incrementally higher pressure into the nextadjacent stage 150. In this manner, thepump 110 is adapted increase the fluid pressure entering theintake chamber 127 and the discharge the fluid at a predetermined pressure. It must be noted other suitable centrifugal pumps known to a person of ordinary skill in the art may be also be employed. - In operation, fluid is supplied through the
intake chamber 127, and themotor 120 is activated to rotate theshaft 135 and theimpellers 144. Rotation of theimpellers 144 increases the pressure of the fluid flowing through eachstage 150. Consequently, a pressure differential is developed across eachstage 150, with the discharge side having a higher pressure than the intake side. The pressure differential created during operation imparts an axial force or thrust to theshaft 135. This axial thrust is directed in the direction toward themotor 120. Because theimpellers 144 are all oriented in the same direction on theshaft 135, the axial thrust from eachimpeller 144 is additive. This cumulative axial thrust load is transmitted directly to themotor 120. - The
motor 120 is adapted to take the thrust load from thepump 110. Themotor 120 is equipped with thrust bearings to carry the load of the rotors. Themotor 120 may be filled with oil to provide lubrication for the bearings. In one embodiment, the thrust bearings are adapted and sized to absorb the thrust load from themotor 120, thereby improving performance and minimizing down time. Preferably, angular contact bearings are used to absorb the thrust load. It is believed that angular contact bearings, due to their design, are capable of absorbing relatively more thrust loads than radial ball bearings. It must be noted that thepump assembly 100 may be operated with any suitable electric motor known to a person of ordinary skill in the art so long as the bearings in the motor are effective to absorb the thrust load of the pump. - One advantage of the pump assembly is that manufacturing costs are significantly reduced. This is because the pump assembly may be assembled without a thrust chamber and the associated components. As a result, the assembly process is also simplified. Embodiments of the pump assembly are particularly advantageous for smaller pumping systems, preferably, pumping systems of less than 100 horsepower, and more preferably, pumping systems of less than 50 horsepower.
- While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (21)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/250,922 US20070086906A1 (en) | 2005-10-14 | 2005-10-14 | Surface pump assembly |
CA2563239A CA2563239C (en) | 2005-10-14 | 2006-10-11 | Surface pump assembly |
GB0620138A GB2431204B (en) | 2005-10-14 | 2006-10-12 | Surface pump assembly |
NO20064634A NO20064634L (en) | 2005-10-14 | 2006-10-12 | Surface pump assembly |
US13/692,468 US9366240B2 (en) | 2005-10-14 | 2012-12-03 | Surface pump assembly |
US15/181,080 US10280930B2 (en) | 2005-10-14 | 2016-06-13 | Surface pump assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/250,922 US20070086906A1 (en) | 2005-10-14 | 2005-10-14 | Surface pump assembly |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/692,468 Continuation US9366240B2 (en) | 2005-10-14 | 2012-12-03 | Surface pump assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070086906A1 true US20070086906A1 (en) | 2007-04-19 |
Family
ID=37491298
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/250,922 Abandoned US20070086906A1 (en) | 2005-10-14 | 2005-10-14 | Surface pump assembly |
US13/692,468 Active 2026-03-10 US9366240B2 (en) | 2005-10-14 | 2012-12-03 | Surface pump assembly |
US15/181,080 Active US10280930B2 (en) | 2005-10-14 | 2016-06-13 | Surface pump assembly |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/692,468 Active 2026-03-10 US9366240B2 (en) | 2005-10-14 | 2012-12-03 | Surface pump assembly |
US15/181,080 Active US10280930B2 (en) | 2005-10-14 | 2016-06-13 | Surface pump assembly |
Country Status (4)
Country | Link |
---|---|
US (3) | US20070086906A1 (en) |
CA (1) | CA2563239C (en) |
GB (1) | GB2431204B (en) |
NO (1) | NO20064634L (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100284830A1 (en) * | 2009-05-05 | 2010-11-11 | National Oilwell Varco, L.P. | Surface Pump Assembly Having a Thrust Chamber with a Telescoping Shaft |
US20140341752A1 (en) * | 2013-03-19 | 2014-11-20 | Flow Control Llc. | Low profile pump with the ability to be mounted in various configurations |
WO2016159990A1 (en) * | 2015-03-31 | 2016-10-06 | Ge Oil & Gas Esp, Inc. | Hydraulically balanced pump discharge |
US10260517B2 (en) | 2013-07-24 | 2019-04-16 | Ge Oil & Gas Esp, Inc. | Fixed suction chamber with rear and front seal removal |
WO2020106589A1 (en) * | 2018-11-19 | 2020-05-28 | Baker Hughes, A Ge Company, Llc | High flow and low npshr horizontal pump |
USD926821S1 (en) * | 2018-11-13 | 2021-08-03 | Franklin Electric Co., Inc. | Submersible pump assembly |
US11125218B2 (en) | 2018-02-16 | 2021-09-21 | Odessa Pumps And Equipment, Inc. | Modular horizontal pumping system with mobile platform and method of using same |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070086906A1 (en) * | 2005-10-14 | 2007-04-19 | Wayne Horley | Surface pump assembly |
US9926524B2 (en) | 2014-12-22 | 2018-03-27 | Saint-Gobain Performance Plastics Corporation | Gas permeable material |
US11092164B2 (en) * | 2015-12-29 | 2021-08-17 | Baker Hughes Esp, Inc. | Non-welded suction chamber for surface pumping systems |
EP3686434A1 (en) | 2019-01-25 | 2020-07-29 | Pentair Flow Technologies, LLC | Self-priming assembly for use in a multi-stage pump |
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US3944303A (en) * | 1975-06-03 | 1976-03-16 | Jury Rolenovich Ioanesian | Thrust support for a fluid motor used in drilling wells |
US4672249A (en) * | 1984-12-25 | 1987-06-09 | Ebara Corporation | Submersible electric motor having floating bearings |
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-
2005
- 2005-10-14 US US11/250,922 patent/US20070086906A1/en not_active Abandoned
-
2006
- 2006-10-11 CA CA2563239A patent/CA2563239C/en not_active Expired - Fee Related
- 2006-10-12 GB GB0620138A patent/GB2431204B/en not_active Expired - Fee Related
- 2006-10-12 NO NO20064634A patent/NO20064634L/en not_active Application Discontinuation
-
2012
- 2012-12-03 US US13/692,468 patent/US9366240B2/en active Active
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2016
- 2016-06-13 US US15/181,080 patent/US10280930B2/en active Active
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US3856368A (en) * | 1971-05-28 | 1974-12-24 | K Andersen | Fluid seal for bearing assembly |
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US5567133A (en) * | 1993-07-16 | 1996-10-22 | Ebara Corporation | Canned motor and pump employing such canned motor |
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Cited By (10)
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US20100284830A1 (en) * | 2009-05-05 | 2010-11-11 | National Oilwell Varco, L.P. | Surface Pump Assembly Having a Thrust Chamber with a Telescoping Shaft |
US8529222B2 (en) | 2009-05-05 | 2013-09-10 | National Oilwell Varco, L.P. | Surface pump assembly having a thrust chamber with a telescoping shaft |
US20140341752A1 (en) * | 2013-03-19 | 2014-11-20 | Flow Control Llc. | Low profile pump with the ability to be mounted in various configurations |
US9810241B2 (en) * | 2013-03-19 | 2017-11-07 | Flow Control LLC | Low profile pump with the ability to be mounted in various configurations |
US10323646B2 (en) | 2013-03-19 | 2019-06-18 | Flow Control LLC | Low profile pump with the ability to be mounted in various configurations |
US10260517B2 (en) | 2013-07-24 | 2019-04-16 | Ge Oil & Gas Esp, Inc. | Fixed suction chamber with rear and front seal removal |
WO2016159990A1 (en) * | 2015-03-31 | 2016-10-06 | Ge Oil & Gas Esp, Inc. | Hydraulically balanced pump discharge |
US11125218B2 (en) | 2018-02-16 | 2021-09-21 | Odessa Pumps And Equipment, Inc. | Modular horizontal pumping system with mobile platform and method of using same |
USD926821S1 (en) * | 2018-11-13 | 2021-08-03 | Franklin Electric Co., Inc. | Submersible pump assembly |
WO2020106589A1 (en) * | 2018-11-19 | 2020-05-28 | Baker Hughes, A Ge Company, Llc | High flow and low npshr horizontal pump |
Also Published As
Publication number | Publication date |
---|---|
GB2431204B (en) | 2011-06-15 |
GB0620138D0 (en) | 2006-11-22 |
GB2431204A (en) | 2007-04-18 |
CA2563239C (en) | 2013-01-22 |
US20130183168A1 (en) | 2013-07-18 |
US9366240B2 (en) | 2016-06-14 |
US10280930B2 (en) | 2019-05-07 |
CA2563239A1 (en) | 2007-04-14 |
NO20064634L (en) | 2007-04-16 |
US20160341207A1 (en) | 2016-11-24 |
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