US20080286134A1 - Submersible pumping systems and methods for deep well applications - Google Patents

Submersible pumping systems and methods for deep well applications Download PDF

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Publication number
US20080286134A1
US20080286134A1 US11/749,600 US74960007A US2008286134A1 US 20080286134 A1 US20080286134 A1 US 20080286134A1 US 74960007 A US74960007 A US 74960007A US 2008286134 A1 US2008286134 A1 US 2008286134A1
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United States
Prior art keywords
motor
coupled
converter
subsurface
power
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
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US11/749,600
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English (en)
Inventor
Steven Regalado
Joseph L. Leonard
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Geotech Environmental Equipment Inc
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Geotech Environmental Equipment Inc
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Filing date
Publication date
Application filed by Geotech Environmental Equipment Inc filed Critical Geotech Environmental Equipment Inc
Priority to US11/749,600 priority Critical patent/US20080286134A1/en
Assigned to GEOTECH ENVIRONMENTAL EQUIPMENT, INC. reassignment GEOTECH ENVIRONMENTAL EQUIPMENT, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEONARD, JOSEPH L., REGALADO, STEVEN
Priority to PCT/US2008/006301 priority patent/WO2008143983A2/fr
Publication of US20080286134A1 publication Critical patent/US20080286134A1/en
Priority to US12/775,202 priority patent/US20100270028A1/en
Abandoned legal-status Critical Current

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    • 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
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes

Definitions

  • centrifugal pumps in well-sampling and monitoring applications generally employ a single impeller that is closely coupled to an electric motor that is positioned with a sealed enclosure. Accordingly, numerous difficulties are encountered in the design and operation of well-sampling and monitoring applications that are not present in larger multi-stage devices. For example, relatively long electrical lead lengths may introduce undesired transient electrical loading conditions that may adversely affect the motor, the power supply, or both.
  • FIG. 6 is a diagrammatic block view of a subsurface unit according to the various embodiments.
  • the power converter 50 includes a DC-to-DC converter 52 that is configured to be coupled to a DC power supply at input terminals 54 , and to provide a selected DC output at output terminals 56 .
  • the DC-to-DC converter 52 may include a “buck-boost” device that is structured to accept an approximately constant input voltage V DC, IN and to provide a variable output voltage V DC, OUT that may range above or below the input voltage V DC, IN .
  • a motor speed distribution 120 is shown, which may be implemented by the motor speed controller 116 .
  • a motor speed distribution 122 is approximately linear, so that the speed of the motor 94 increases from stationary to a full speed value at a constant rate. Accordingly, upon being energized, the motor 94 reaches a maximum speed at a time T, which in an embodiment, may be approximately one to three seconds.
  • a motor speed distribution 124 is approximately parabolic (e.g., a polynomial of second degree), so that the speed of the motor 94 increases at a variable rate upon being energized.
  • a motor speed distribution 126 may have still other shapes, such as a third-degree polynomial, so that the speed of the motor 94 increases at still another non-constant rate.
US11/749,600 2007-05-16 2007-05-16 Submersible pumping systems and methods for deep well applications Abandoned US20080286134A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US11/749,600 US20080286134A1 (en) 2007-05-16 2007-05-16 Submersible pumping systems and methods for deep well applications
PCT/US2008/006301 WO2008143983A2 (fr) 2007-05-16 2008-05-16 Systèmes et procédés de pompage submersibles
US12/775,202 US20100270028A1 (en) 2007-05-16 2010-05-06 Submersible pumping systems and methods for deep well applications

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/749,600 US20080286134A1 (en) 2007-05-16 2007-05-16 Submersible pumping systems and methods for deep well applications

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/775,202 Division US20100270028A1 (en) 2007-05-16 2010-05-06 Submersible pumping systems and methods for deep well applications

Publications (1)

Publication Number Publication Date
US20080286134A1 true US20080286134A1 (en) 2008-11-20

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US11/749,600 Abandoned US20080286134A1 (en) 2007-05-16 2007-05-16 Submersible pumping systems and methods for deep well applications
US12/775,202 Abandoned US20100270028A1 (en) 2007-05-16 2010-05-06 Submersible pumping systems and methods for deep well applications

Family Applications After (1)

Application Number Title Priority Date Filing Date
US12/775,202 Abandoned US20100270028A1 (en) 2007-05-16 2010-05-06 Submersible pumping systems and methods for deep well applications

Country Status (2)

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US (2) US20080286134A1 (fr)
WO (1) WO2008143983A2 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080135358A1 (en) * 2006-12-06 2008-06-12 Weatherford Industria E Comercio Ltda Remote control for braking system of progressive cavity pump
US20080142209A1 (en) * 2006-12-15 2008-06-19 Weatherford Industria E Comercio Ltda. Auxiliary braking device for wellhead having progressive cavity pump
US20100270028A1 (en) * 2007-05-16 2010-10-28 Geotech Environmental Equipment, Inc. Submersible pumping systems and methods for deep well applications
US20100300755A1 (en) * 2009-06-02 2010-12-02 Baker Hughes Incorporated System and method for estimating velocity of a downhole component
US20110142697A1 (en) * 2009-12-14 2011-06-16 Pm S.R.L. Containment structure for an actuation unit for immersion pumps, particularly for compact immersion pumps to be immersed in wells
ITPD20100243A1 (it) * 2010-07-30 2012-01-31 Pm S R L Pompa ad immersione monoblocco, particolarmente del tipo per pozzi, vasche raccolta acque e simili
US8545194B2 (en) 2010-12-10 2013-10-01 Xylem Ip Holdings Llc Battery operated solar charged pump kit utilizing an inline submersible pump
US20150110642A1 (en) * 2013-10-18 2015-04-23 Regal Beloit America, Inc. Pump, associated electric machine and associated method
EP2891802A1 (fr) * 2013-12-17 2015-07-08 WISY AG Haustechniksysteme, Filtertechnik Disjoncteur automatique pour une commande de pompe
US20170335851A1 (en) * 2016-05-17 2017-11-23 Sanjay K. Roy Solar Powered Pumping System
US20180133622A1 (en) * 2016-11-17 2018-05-17 Paterson & Cooke Ideas, Ltd. Thickener Feed Dilution System
US10100835B2 (en) 2015-09-15 2018-10-16 General Electric Company Fluid extraction system and related method of controlling operating speeds of electric machines thereof
WO2019051577A1 (fr) * 2017-09-18 2019-03-21 Jeremy Leonard Pompe submersible autonome
US10596491B2 (en) 2015-03-19 2020-03-24 Paterson & Cooke Ideas, Ltd. Thickener feed distributor
US11085450B2 (en) 2013-10-18 2021-08-10 Regal Beloit America, Inc. Pump having a housing with internal and external planar surfaces defining a cavity with an axial flux motor driven impeller secured therein

Citations (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US938878A (en) * 1908-06-04 1909-11-02 William H Larkin Pump for wells.
US2404635A (en) * 1943-11-06 1946-07-23 Electrical Engineering And Mfg Sealing means for driving motors of submersible pumps
US2430509A (en) * 1943-11-06 1947-11-11 Electrical Engineering And Mfg Shaft seal for submersible pumps
US2492141A (en) * 1945-03-26 1949-12-27 Byron Jackson Co Submersible motor
US2506827A (en) * 1948-03-15 1950-05-09 Theodore C Goodner Centrifugal turbine pump
US3011446A (en) * 1956-02-17 1961-12-05 Tokheim Corp Submerged motor pump structure
US3294993A (en) * 1964-06-18 1966-12-27 Red Jacket Mfg Company Submersible motor with electrical connector assembly
US3295456A (en) * 1965-04-12 1967-01-03 Cornell Mfg Co Pump
US3371613A (en) * 1965-04-30 1968-03-05 Stenberg Flygt Ab Sewage pump or the like
US3491696A (en) * 1968-10-11 1970-01-27 Henry H Howard Centrifugal pump
US3850550A (en) * 1971-08-05 1974-11-26 Hydr O Matic Pump Co Centrifugal pump and motor
US4264269A (en) * 1978-09-25 1981-04-28 Kobe, Inc. Centrifugal pitot pump with improved pitot
US4370098A (en) * 1980-10-20 1983-01-25 Esco Manufacturing Company Method and apparatus for monitoring and controlling on line dynamic operating conditions
US4386653A (en) * 1982-02-08 1983-06-07 Drake Eldon L Anti-gas locking apparatus
US4854830A (en) * 1987-05-01 1989-08-08 Aisan Kogyo Kabushiki Kaisha Motor-driven fuel pump
US4890988A (en) * 1986-11-20 1990-01-02 Heyko Reinecker Canned motor pump
US4928771A (en) * 1989-07-25 1990-05-29 Baker Hughes Incorporated Cable suspended pumping system
US4932837A (en) * 1988-10-21 1990-06-12 Rymal Ted R Centrifugal pump for liquids
US5038267A (en) * 1990-05-03 1991-08-06 General Electric Company Soft-switching power converter for operation in discrete pulse modulation and pulse width modulation modes
US5055006A (en) * 1988-02-08 1991-10-08 Ebara Corporation Submerged motor pump having an outer casing which is radially deformable
US5061157A (en) * 1989-09-26 1991-10-29 Ebara Corporation Submersible pump
US5074764A (en) * 1989-04-06 1991-12-24 Ebara Corporation Submergible motor pump
US5171090A (en) * 1990-04-30 1992-12-15 Wiemers Reginald A Device and method for dispensing a substance in a liquid
US5207273A (en) * 1990-09-17 1993-05-04 Production Technologies International Inc. Method and apparatus for pumping wells
US5220829A (en) * 1990-10-23 1993-06-22 Halliburton Company Downhole formation pump
US5238060A (en) * 1992-09-08 1993-08-24 Oed Environmental Systems, Inc. Sampling pump with packer
US5250863A (en) * 1991-09-03 1993-10-05 Itt Flygt Ab Motor and cooling means therefor
US5293931A (en) * 1992-10-26 1994-03-15 Nichols Ralph L Modular, multi-level groundwater sampler
US5297943A (en) * 1993-03-26 1994-03-29 Baker Hughes Incorporated Electrical submersible pump discharge head
USRE34754E (en) * 1983-02-28 1994-10-11 Qed Environmental Systems, Inc. Fluid sampling apparatus
US5616973A (en) * 1994-06-29 1997-04-01 Yeomans Chicago Corporation Pump motor housing with improved cooling means
US5648694A (en) * 1993-10-13 1997-07-15 Ebara Corporation Motor stator assembly and full-circumferential flow pump employing such motor stator assembly
US5684346A (en) * 1995-11-17 1997-11-04 Itt Flygt Ab Cooling device
US5708220A (en) * 1995-04-27 1998-01-13 Burge; Russell W. Liquid sampling device and method
US5836745A (en) * 1995-12-12 1998-11-17 Sippican, Inc. Fluid recovery apparatus and method using a motive force
US5868164A (en) * 1996-04-12 1999-02-09 Chlorinators Incorporated Fluid control valve system with combined step and proportional-integral control
US5888053A (en) * 1995-02-10 1999-03-30 Ebara Corporation Pump having first and second outer casing members
US6022196A (en) * 1997-06-26 2000-02-08 Grundfos A/S Submersible motor unit
US6121698A (en) * 1998-07-28 2000-09-19 Fairbanks Morse Company Oil cooled motor and pump apparatus
US6158509A (en) * 1996-08-02 2000-12-12 Peterson; Roger Method and apparatus for gathering liquid sample using a submersible pump
US6264431B1 (en) * 1999-05-17 2001-07-24 Franklin Electric Co., Inc. Variable-speed motor drive controller for a pump-motor assembly
US6296459B1 (en) * 2000-02-15 2001-10-02 Intex Recreation Corp. Electric air pump having multiple impellers and method
US6361272B1 (en) * 2000-10-10 2002-03-26 Lonnie Bassett Centrifugal submersible pump
US6397946B1 (en) * 1994-10-14 2002-06-04 Smart Drilling And Completion, Inc. Closed-loop system to compete oil and gas wells closed-loop system to complete oil and gas wells c
US6676382B2 (en) * 1999-11-19 2004-01-13 Campbell Hausfeld/Scott Fetzer Company Sump pump monitoring and control system
US6691782B2 (en) * 2002-01-28 2004-02-17 Baker Hughes Incorporated Method and system for below motor well fluid separation and conditioning
US20040052645A1 (en) * 2000-12-22 2004-03-18 Jorgen Christensen Method for operating a motor pump
US6758273B2 (en) * 2000-06-16 2004-07-06 Richard B. Learned Low-flow groundwater sampling system
US20050063843A1 (en) * 2003-09-18 2005-03-24 Beckett Corporation Submersible pump
US20050095150A1 (en) * 2003-10-29 2005-05-05 Michele Leone Centrifugal multistage pump
US6937923B1 (en) * 2000-11-01 2005-08-30 Weatherford/Lamb, Inc. Controller system for downhole applications
US20060078444A1 (en) * 2004-09-17 2006-04-13 Pumpenfabrik Ernst Vogel Gesellschaft G.M.B.H Liquid-cooled pump control device and fluid pump assembly
US7042180B2 (en) * 2003-01-24 2006-05-09 Tecumseh Products Company Brushless and sensorless DC motor control system with locked and stopped rotor detection
US7170262B2 (en) * 2003-12-24 2007-01-30 Foundation Enterprises Ltd. Variable frequency power system and method of use
US7252141B2 (en) * 2005-02-17 2007-08-07 Concurrent Technologies International, Llc Groundwater sampling device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635581A (en) * 1969-08-22 1972-01-18 Air Reduction High-pressure centrifugal pump
US3728857A (en) * 1971-06-22 1973-04-24 Gates Rubber Co Turbo-compressor-pump
US8540493B2 (en) * 2003-12-08 2013-09-24 Sta-Rite Industries, Llc Pump control system and method
JP3963940B2 (ja) * 2004-04-27 2007-08-22 松下電器産業株式会社 ヒートポンプ装置
US20070258827A1 (en) * 2006-05-02 2007-11-08 Daniel Gierke Sump pump system
US20080286134A1 (en) * 2007-05-16 2008-11-20 Steven Regalado Submersible pumping systems and methods for deep well applications

Patent Citations (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US938878A (en) * 1908-06-04 1909-11-02 William H Larkin Pump for wells.
US2404635A (en) * 1943-11-06 1946-07-23 Electrical Engineering And Mfg Sealing means for driving motors of submersible pumps
US2430509A (en) * 1943-11-06 1947-11-11 Electrical Engineering And Mfg Shaft seal for submersible pumps
US2492141A (en) * 1945-03-26 1949-12-27 Byron Jackson Co Submersible motor
US2506827A (en) * 1948-03-15 1950-05-09 Theodore C Goodner Centrifugal turbine pump
US3011446A (en) * 1956-02-17 1961-12-05 Tokheim Corp Submerged motor pump structure
US3294993A (en) * 1964-06-18 1966-12-27 Red Jacket Mfg Company Submersible motor with electrical connector assembly
US3295456A (en) * 1965-04-12 1967-01-03 Cornell Mfg Co Pump
US3371613A (en) * 1965-04-30 1968-03-05 Stenberg Flygt Ab Sewage pump or the like
US3491696A (en) * 1968-10-11 1970-01-27 Henry H Howard Centrifugal pump
US3850550A (en) * 1971-08-05 1974-11-26 Hydr O Matic Pump Co Centrifugal pump and motor
US4264269A (en) * 1978-09-25 1981-04-28 Kobe, Inc. Centrifugal pitot pump with improved pitot
US4370098A (en) * 1980-10-20 1983-01-25 Esco Manufacturing Company Method and apparatus for monitoring and controlling on line dynamic operating conditions
US4386653A (en) * 1982-02-08 1983-06-07 Drake Eldon L Anti-gas locking apparatus
USRE34754E (en) * 1983-02-28 1994-10-11 Qed Environmental Systems, Inc. Fluid sampling apparatus
US4890988A (en) * 1986-11-20 1990-01-02 Heyko Reinecker Canned motor pump
US4854830A (en) * 1987-05-01 1989-08-08 Aisan Kogyo Kabushiki Kaisha Motor-driven fuel pump
US5055006A (en) * 1988-02-08 1991-10-08 Ebara Corporation Submerged motor pump having an outer casing which is radially deformable
US4932837A (en) * 1988-10-21 1990-06-12 Rymal Ted R Centrifugal pump for liquids
US5074764A (en) * 1989-04-06 1991-12-24 Ebara Corporation Submergible motor pump
US4928771A (en) * 1989-07-25 1990-05-29 Baker Hughes Incorporated Cable suspended pumping system
US5061157A (en) * 1989-09-26 1991-10-29 Ebara Corporation Submersible pump
US5171090A (en) * 1990-04-30 1992-12-15 Wiemers Reginald A Device and method for dispensing a substance in a liquid
US5038267A (en) * 1990-05-03 1991-08-06 General Electric Company Soft-switching power converter for operation in discrete pulse modulation and pulse width modulation modes
US5207273A (en) * 1990-09-17 1993-05-04 Production Technologies International Inc. Method and apparatus for pumping wells
US5220829A (en) * 1990-10-23 1993-06-22 Halliburton Company Downhole formation pump
US5250863A (en) * 1991-09-03 1993-10-05 Itt Flygt Ab Motor and cooling means therefor
US5238060A (en) * 1992-09-08 1993-08-24 Oed Environmental Systems, Inc. Sampling pump with packer
US5293931A (en) * 1992-10-26 1994-03-15 Nichols Ralph L Modular, multi-level groundwater sampler
US5297943A (en) * 1993-03-26 1994-03-29 Baker Hughes Incorporated Electrical submersible pump discharge head
US5648694A (en) * 1993-10-13 1997-07-15 Ebara Corporation Motor stator assembly and full-circumferential flow pump employing such motor stator assembly
US5616973A (en) * 1994-06-29 1997-04-01 Yeomans Chicago Corporation Pump motor housing with improved cooling means
US6397946B1 (en) * 1994-10-14 2002-06-04 Smart Drilling And Completion, Inc. Closed-loop system to compete oil and gas wells closed-loop system to complete oil and gas wells c
US5888053A (en) * 1995-02-10 1999-03-30 Ebara Corporation Pump having first and second outer casing members
US5708220A (en) * 1995-04-27 1998-01-13 Burge; Russell W. Liquid sampling device and method
US5684346A (en) * 1995-11-17 1997-11-04 Itt Flygt Ab Cooling device
US5836745A (en) * 1995-12-12 1998-11-17 Sippican, Inc. Fluid recovery apparatus and method using a motive force
US5868164A (en) * 1996-04-12 1999-02-09 Chlorinators Incorporated Fluid control valve system with combined step and proportional-integral control
US6158509A (en) * 1996-08-02 2000-12-12 Peterson; Roger Method and apparatus for gathering liquid sample using a submersible pump
US6022196A (en) * 1997-06-26 2000-02-08 Grundfos A/S Submersible motor unit
US6121698A (en) * 1998-07-28 2000-09-19 Fairbanks Morse Company Oil cooled motor and pump apparatus
US6264431B1 (en) * 1999-05-17 2001-07-24 Franklin Electric Co., Inc. Variable-speed motor drive controller for a pump-motor assembly
US6676382B2 (en) * 1999-11-19 2004-01-13 Campbell Hausfeld/Scott Fetzer Company Sump pump monitoring and control system
US6296459B1 (en) * 2000-02-15 2001-10-02 Intex Recreation Corp. Electric air pump having multiple impellers and method
US6758273B2 (en) * 2000-06-16 2004-07-06 Richard B. Learned Low-flow groundwater sampling system
US6361272B1 (en) * 2000-10-10 2002-03-26 Lonnie Bassett Centrifugal submersible pump
US6937923B1 (en) * 2000-11-01 2005-08-30 Weatherford/Lamb, Inc. Controller system for downhole applications
US20040052645A1 (en) * 2000-12-22 2004-03-18 Jorgen Christensen Method for operating a motor pump
US6691782B2 (en) * 2002-01-28 2004-02-17 Baker Hughes Incorporated Method and system for below motor well fluid separation and conditioning
US7042180B2 (en) * 2003-01-24 2006-05-09 Tecumseh Products Company Brushless and sensorless DC motor control system with locked and stopped rotor detection
US20050063843A1 (en) * 2003-09-18 2005-03-24 Beckett Corporation Submersible pump
US20050095150A1 (en) * 2003-10-29 2005-05-05 Michele Leone Centrifugal multistage pump
US7170262B2 (en) * 2003-12-24 2007-01-30 Foundation Enterprises Ltd. Variable frequency power system and method of use
US20060078444A1 (en) * 2004-09-17 2006-04-13 Pumpenfabrik Ernst Vogel Gesellschaft G.M.B.H Liquid-cooled pump control device and fluid pump assembly
US7252141B2 (en) * 2005-02-17 2007-08-07 Concurrent Technologies International, Llc Groundwater sampling device
US20080087413A1 (en) * 2005-02-17 2008-04-17 Concurrent Technologies International Llc Groundwater sampling device

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8955650B2 (en) 2006-12-06 2015-02-17 Weatherford Industria E Comercio Ltda Remote control for braking system of progressive cavity pump
US20080135358A1 (en) * 2006-12-06 2008-06-12 Weatherford Industria E Comercio Ltda Remote control for braking system of progressive cavity pump
US8550218B2 (en) 2006-12-06 2013-10-08 Weatherford Industria E Comecio Ltda. Remote control for braking system of progressive cavity pump
US20080142209A1 (en) * 2006-12-15 2008-06-19 Weatherford Industria E Comercio Ltda. Auxiliary braking device for wellhead having progressive cavity pump
US7806665B2 (en) * 2006-12-15 2010-10-05 Weatherford Industria E Comercio Ltda. Auxiliary braking device for wellhead having progressive cavity pump
US20100270028A1 (en) * 2007-05-16 2010-10-28 Geotech Environmental Equipment, Inc. Submersible pumping systems and methods for deep well applications
US20100300755A1 (en) * 2009-06-02 2010-12-02 Baker Hughes Incorporated System and method for estimating velocity of a downhole component
US20110142697A1 (en) * 2009-12-14 2011-06-16 Pm S.R.L. Containment structure for an actuation unit for immersion pumps, particularly for compact immersion pumps to be immersed in wells
US9353766B2 (en) * 2009-12-14 2016-05-31 Pm S.R.L. Containment structure for an actuation unit for immersion pumps, particularly for compact immersion pumps to be immersed in wells
ITPD20100243A1 (it) * 2010-07-30 2012-01-31 Pm S R L Pompa ad immersione monoblocco, particolarmente del tipo per pozzi, vasche raccolta acque e simili
US8545194B2 (en) 2010-12-10 2013-10-01 Xylem Ip Holdings Llc Battery operated solar charged pump kit utilizing an inline submersible pump
US20150110642A1 (en) * 2013-10-18 2015-04-23 Regal Beloit America, Inc. Pump, associated electric machine and associated method
US11085450B2 (en) 2013-10-18 2021-08-10 Regal Beloit America, Inc. Pump having a housing with internal and external planar surfaces defining a cavity with an axial flux motor driven impeller secured therein
US10087938B2 (en) * 2013-10-18 2018-10-02 Regal Beloit America, Inc. Pump, associated electric machine and associated method
EP2891802A1 (fr) * 2013-12-17 2015-07-08 WISY AG Haustechniksysteme, Filtertechnik Disjoncteur automatique pour une commande de pompe
US10596491B2 (en) 2015-03-19 2020-03-24 Paterson & Cooke Ideas, Ltd. Thickener feed distributor
US11065562B2 (en) 2015-03-19 2021-07-20 Paterson & Cooke Ideas, Ltd. Thickener feed distributor
US11612836B2 (en) 2015-03-19 2023-03-28 Paterson & Cooke Ideas, Ltd. Thickener feed distributor
US10288074B2 (en) 2015-09-15 2019-05-14 General Electric Company Control sub-system and related method of controlling electric machine in fluid extraction system
US10100835B2 (en) 2015-09-15 2018-10-16 General Electric Company Fluid extraction system and related method of controlling operating speeds of electric machines thereof
US10670022B2 (en) * 2016-05-17 2020-06-02 Sanjay K Roy Solar powered pumping system
US20170335851A1 (en) * 2016-05-17 2017-11-23 Sanjay K. Roy Solar Powered Pumping System
US20180133622A1 (en) * 2016-11-17 2018-05-17 Paterson & Cooke Ideas, Ltd. Thickener Feed Dilution System
US20190085840A1 (en) * 2017-09-18 2019-03-21 Jeremy Leonard Autonomous submersible pump
US10995748B2 (en) * 2017-09-18 2021-05-04 Jeremy Leonard Autonomous submersible pump
WO2019051577A1 (fr) * 2017-09-18 2019-03-21 Jeremy Leonard Pompe submersible autonome

Also Published As

Publication number Publication date
WO2008143983A4 (fr) 2009-03-12
WO2008143983A2 (fr) 2008-11-27
US20100270028A1 (en) 2010-10-28
WO2008143983A3 (fr) 2009-01-22

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