| Patents for F04B 47 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps (5,485) |
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| 01/12/2011 | CN201705631U Spiral-flow type oil-well pump |
| 01/12/2011 | CN201705305U Asymmetrical operating beamless coalbed methane drainage apparatus |
| 01/12/2011 | CN101672272B Gas and sand anchor device of electrical submersible pump |
| 01/06/2011 | WO2011002902A2 Carrier for plunger during disassembly |
| 01/06/2011 | WO2011002558A1 Fluid sealing elements and related methods |
| 01/06/2011 | CA2763401A1 Fluid sealing elements and related methods |
| 01/05/2011 | CN201696291U Offset oil well screw pump driving device |
| 01/05/2011 | CN201696285U Ground driving and sealing device of screw pump |
| 01/05/2011 | CN201696272U Long-plunger sandproof oil-well pump |
| 01/05/2011 | CN201696271U Lengthened stroke oil well pump |
| 01/05/2011 | CN201696270U Sand settlement prevention device and oil pumping pipeline system |
| 01/05/2011 | CN201696269U Defueling pump for sand prevention |
| 01/05/2011 | CN201696268U Anti-jamming oil well pump |
| 01/05/2011 | CN201696267U Block-prevention oil pump |
| 01/05/2011 | CN201696266U Multifunctional oil well pump cleaning device |
| 01/05/2011 | CN201696008U Screw oil pumping device for thermal production well and rotary screw pump mounting base thereof |
| 01/05/2011 | CN201696004U Non-beam type oil pumping machine of torque motor |
| 01/05/2011 | CN101936290A Blowout preventer of rod type defueling pump |
| 01/05/2011 | CN101936284A Constant feedback force thick oil pump |
| 01/05/2011 | CN101936283A Two-pipe jet pump seat |
| 01/05/2011 | CN101936147A Multifunctional double-acting hydraulic oil producing device |
| 01/04/2011 | CA2619861C Variable speed wellhead top drive |
| 01/04/2011 | CA2607683C Inverted electrical submersible pump completion to maintain fluid segregation and ensure motor cooling in dual-stream well |
| 01/01/2011 | CA2708843A1 System to measure vibrations using fiber optic sensors |
| 12/30/2010 | US20100329902 Pneumatic motorized multi-pump system |
| 12/30/2010 | US20100329892 Hydraulic drive and control system for pumps |
| 12/30/2010 | DE202010008297U1 Elektrohydraulisch angetriebenes Pumpenaggregat für Bohrlöcher Electro-hydraulically driven pump unit for wells |
| 12/29/2010 | CN201687692U Variable-displacement oil pump |
| 12/29/2010 | CN101929325A Novel beam counterweight connecting device |
| 12/28/2010 | US7857065 Device for selective movement of well tools and also a method of using same |
| 12/23/2010 | WO2010147680A1 Improved down hole delivery system |
| 12/23/2010 | US20100319529 Valve Cap |
| 12/23/2010 | CA2764929A1 Improved down hole delivery system |
| 12/22/2010 | CN201679700U Hydraulic reciprocating type rodless oil production pump |
| 12/22/2010 | CN201679699U Oil-well pump of four-proofing deep well |
| 12/22/2010 | CN201679698U Oil pipe rotating reciprocating oil well pumpoil-well pumpoil-well pumpoil-well pump |
| 12/22/2010 | CN201679697U Long-acting compound seal plunger defueling pump |
| 12/22/2010 | CN201679485U Auxiliary walking beam balancing device of pumping unit |
| 12/22/2010 | CN201679484U Flat belt winding-type linear oil pumping unit |
| 12/22/2010 | CN201679483U Auto reversing indirectly dragged steel rope type oil pumping unit |
| 12/22/2010 | CN201679482U Direct-traction type pumping unit with outer rotor motor |
| 12/22/2010 | CN101349325B Overlapped parallel type involute oil-submersible screw pump planetary reducer |
| 12/21/2010 | CA2590452C Seal section for electrical submersible pump |
| 12/17/2010 | CA2707376A1 Device and method for gas lock detection in an electrical submersible pump assembly |
| 12/15/2010 | CN201671801U Hydraulic driving screw pump with balance device |
| 12/15/2010 | CN201671604U Guide rod type pumping unit |
| 12/15/2010 | CN201671601U Oil-lifting pumping-assisting device for pumping well |
| 12/15/2010 | CN101076653B Submersible pump |
| 12/09/2010 | US20100310395 Pump for a vehicle brake system having a valve |
| 12/09/2010 | US20100310385 Artificial Lift Mechanisms |
| 12/09/2010 | CA2763162A1 Hydraulic oilfield lift pump |
| 12/09/2010 | CA2707269A1 Method of controlling a pump and motor |
| 12/09/2010 | CA2707206A1 Safety system and method for pump and motor |
| 12/09/2010 | CA2707167A1 System and method for motor drive control pad and drive terminals |
| 12/08/2010 | CN201666245U Anti-fouling and sand-proof oil pump |
| 12/08/2010 | CN101907086A Coil reciprocating oil pump |
| 12/08/2010 | CN101469693B Centring type rotary plunger oil-well pump |
| 12/08/2010 | CN101446281B Drainage device for coal bed gas well electric submersible centrifugal pump |
| 12/08/2010 | CN101305187B System and method for optimizing down-hole fluid yield |
| 12/02/2010 | US20100300679 Hydraulic Oilfield Lift Pump |
| 12/02/2010 | CA2705959A1 Plug in pump for inverted shroud assembly |
| 12/01/2010 | CN201661451U Direct driving type electric oil-immersed screw pump |
| 12/01/2010 | CN201661281U Automatic control system for variable parameter running of beam-pumping unit |
| 12/01/2010 | CN201661277U Multifunctional pumping well intensifying device |
| 12/01/2010 | CN101899964A Long-stroke dual-headframe type oil extractor |
| 11/25/2010 | WO2010135119A1 Electric submersible pumping system for dewatering gas wells |
| 11/25/2010 | WO2010134847A1 Pump rod with polyurethane coating and a coating application method |
| 11/25/2010 | CA2760223A1 Electric submersible pumping system for dewatering gas wells |
| 11/24/2010 | CN201650727U Disk-type power head anti-reverse mechanism of screw-type oil pump |
| 11/24/2010 | CN201650693U Hydraulic transmission rodless oil-well pump |
| 11/24/2010 | CN201650692U Oil-well pump cable of enabling continuous liquid entry regardless of going up or down |
| 11/24/2010 | CN201650691U Downhole electric miniature high-pressure four-plunger pump |
| 11/24/2010 | CN201650238U Swing-rod pumping unit |
| 11/24/2010 | CN201650235U Inverted triangular energy-saving oil pump |
| 11/24/2010 | CN201650232U Dual-horse head superposed non-synchronous crank long stroke energy-saving beam-pumping unit |
| 11/24/2010 | CN201650223U Pumping unit counterbalance locker |
| 11/24/2010 | CN201650176U Rotary sitting type screw pump anchor |
| 11/23/2010 | CA2601553C Hi-dielectric debris seal for pothead interface |
| 11/23/2010 | CA2512557C Integrated control system for beam pump systems |
| 11/22/2010 | CA2705086A1 Plunger lift |
| 11/18/2010 | US20100288493 Cable suspended pumping system |
| 11/17/2010 | EP2250340A2 Hydraulic oil well pumping apparatus |
| 11/17/2010 | CN201635979U Oil-well pump under pressure operation |
| 11/17/2010 | CN201635978U Reinforced on-off multi-stage piston multifunctional combination pump |
| 11/17/2010 | CN201635977U Anti-scale and sand-proof device |
| 11/17/2010 | CN201635976U Oil-well pump pressure guidance device |
| 11/17/2010 | CN201635709U Secondary speed reducer |
| 11/17/2010 | CN101886625A Wear-resistant and sand-proof oil pump |
| 11/17/2010 | CN101886535A Mule-head manual displacement device of pumping unit |
| 11/10/2010 | CN201627707U Oil production device capable of overcoming gas locking of gas contained oil well |
| 11/10/2010 | CN101881145A Tower frame type combined transmission numerically controlled pumping unit |
| 11/10/2010 | CN101021148B Oil production subsurface screw pump anchoring device |
| 11/09/2010 | CA2369417C Water, oil and gas well recovery system |
| 11/03/2010 | CN201621049U Minitype diving pump |
| 11/03/2010 | CN201621048U Pump cylinder striking-off oil-well pump |
| 11/03/2010 | CN201621047U Straight line driving pump |
| 11/03/2010 | CN201620843U Hydraulic pumping unit for petroleum |
| 11/03/2010 | CN201620834U Shear connecting rod beamless oil extractor |
| 11/03/2010 | CN101876312A Blocking-proof oil extraction pump |
| 11/03/2010 | CN101387128B Rainwater drain support system and method |