| 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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| 02/27/2014 | WO2013191586A3 Downhole pump assembly |
| 02/27/2014 | US20140056731 Hydraulically controlled reciprocating pump system |
| 02/26/2014 | EP2699762A2 Electrical submersible pump with reciprocating linear motor |
| 02/26/2014 | CN203453041U Three-way diversion joint for set pump |
| 02/26/2014 | CN203453019U Bottom-supporting sand-preventing oil-well pump |
| 02/26/2014 | CN103608650A System and method for sensing a liquid level |
| 02/26/2014 | CN103603791A Hollow oil well pump |
| 02/19/2014 | CN103591004A Pumping system powered by micro-head liquid energy |
| 02/19/2014 | CN102359445B Screw pump ground driving device with three-end-face mechanical seal |
| 02/19/2014 | CN101787870B Multi-cylinder combined type full-balanced hydraulic oil pumping unit |
| 02/19/2014 | CN101787869B Double-cylinder symmetrical type fully balanced hydraulic oil pumping unit |
| 02/19/2014 | CN101787868B Single-cylinder bidirectional full-balanced hydraulic oil extractor |
| 02/18/2014 | CA2760223C Electric submersible pumping system for dewatering gas wells |
| 02/16/2014 | CA2787217A1 Belt tensioner for a pump jack |
| 02/14/2014 | CA2842790A1 Velocity sensor for a plunger lift system |
| 02/13/2014 | WO2013110979A3 Intermediate storage |
| 02/12/2014 | CN103573596A 动态流体泵 Dynamic fluid pump |
| 02/12/2014 | CN103573595A Automatic descaling and anti-jamming oil-well pump |
| 02/12/2014 | CN103573594A Oil pump capable of preventing fixed valve from failing |
| 02/11/2014 | CA2724058C Steam driven pump for sagd system |
| 02/11/2014 | CA2713749C Device, computer program product and computer-implemented method for backspin detection in an electrical submersible pump assembly |
| 02/05/2014 | CN203420857U Oil well deep pumping relay pump |
| 02/05/2014 | CN203420856U Viscosity reduction pump |
| 02/05/2014 | CN103557145A Electric submersible oil reciprocation pump |
| 02/02/2014 | CA2802876A1 Tower-style double cylinder hydraulic oil pumping unit |
| 01/30/2014 | WO2014017942A1 Downhole sucker-rod pump |
| 01/29/2014 | CN203412713U Novel submersible pump for well |
| 01/29/2014 | CN103541887A Sand-preventing gas-preventing integrated oil production device |
| 01/28/2014 | CA2600740C Discharge pressure actuated pump |
| 01/23/2014 | WO2014012195A1 Intelligent and high-efficiency deep-well pump |
| 01/22/2014 | EP2687722A1 A dynamic fluid pump |
| 01/22/2014 | CN203404066U Oil well pump |
| 01/22/2014 | CN203404054U Hydraulic deep-well pump |
| 01/22/2014 | CN203404053U Low-loss deep well oil well pump |
| 01/22/2014 | CN103534434A Submersible progressive cavity pump driver |
| 01/22/2014 | CN103527458A Plunger pump |
| 01/22/2014 | CN103527457A Double-layer self-sealing ultra-long stroke oil well pump |
| 01/22/2014 | CN103527456A Water conservation oil well pump |
| 01/22/2014 | CN103527455A 一种潜油电泵系统 One kind of submersible pump system |
| 01/22/2014 | CN103527454A Blocking type blowout-control oil well pump |
| 01/22/2014 | CN103527453A Blowout-prevention oil well pump |
| 01/21/2014 | CA2708843C System to measure vibrations using fiber optic sensors |
| 01/15/2014 | CN203394719U Thickened oil thermal recovery oil suction pump for horizontal well |
| 01/15/2014 | CN203394718U Deep wall oil pump |
| 01/15/2014 | CN203394717U Tandem long plunger rod type oil-well pump of travelling valve |
| 01/15/2014 | CN203394716U Energy-saving oil well pump |
| 01/15/2014 | CN203394715U Anti-air-locking oil well pump |
| 01/15/2014 | CN103511235A Low-noise oil pumping mechanism for hydraulic plunger pump |
| 01/15/2014 | CN103511234A Piston type oil well pump |
| 01/09/2014 | WO2014007940A1 System and method for powering a hydraulic pump |
| 01/08/2014 | CN203384017U Downhole fluid power oil pumping system |
| 01/08/2014 | CN203384016U Movable cylinder type blocking-resistant oil pump |
| 01/08/2014 | CN103498786A Oil production pump |
| 01/08/2014 | CN103498785A Fireflooding oil well pump |
| 01/08/2014 | CN102191929B Vertical energy-saving pumping unit |
| 01/07/2014 | CA2788984C High efficiency fluid pumping apparatus and method |
| 01/02/2014 | US20140000866 Pumping assembly |
| 12/27/2013 | WO2013191586A2 Downhole pump assembly |
| 12/27/2013 | WO2013190287A1 Pump |
| 12/27/2013 | WO2013149932A3 Method of pumping fluid |
| 12/25/2013 | EP2432966B1 Cable suspended pumping system |
| 12/25/2013 | CN203362469U Rodless oil-well pump |
| 12/25/2013 | CN203362468U Hydraulic feedback plunger oil well pump |
| 12/25/2013 | CN203362467U Novel shaft type cable sealing elastomer |
| 12/25/2013 | CN103477094A Modular torque protection device |
| 12/25/2013 | CN103477027A Reverse rotation protection for borehole pumps |
| 12/25/2013 | CA2799888A1 Lift system |
| 12/18/2013 | CN103452835A Separate-layer oil extraction device capable of controlling flowing pressures of upper and lower pay zones |
| 12/18/2013 | CN103452834A Mechanical forced-twisting plunger rotator |
| 12/18/2013 | CN103452833A Anti-blocking and anti-gas drainage pump for coal-bed gas mechanical valve |
| 12/18/2013 | CN103452822A Novel oil-well pump |
| 12/18/2013 | CN103452821A Blowout prevention oil-well pump |
| 12/18/2013 | CN103452820A Anti-sand and anti-gas lock pump for coal-bed gas mechanical on/off valve |
| 12/18/2013 | CN103452819A Layered-extracting and mixed-discharging oil-well pump with upper and lower plungers separated |
| 12/18/2013 | CN102041978B Rod hiding type oil pumping unit |
| 12/16/2013 | CA2829884A1 Hydraulically powered ball valve lift apparatus and method for downhole pump travelling valves |
| 12/12/2013 | WO2013043583A3 Gas lift assist for fossil fuel wells |
| 12/12/2013 | US20130327574 Carbon Foam Metal Matrix Composite and Mud Pump Employing Same |
| 12/11/2013 | CN103437995A Connector |
| 12/11/2013 | CN103437984A Multifunctional solid plunger piston tubing pump |
| 12/11/2013 | CN103437972A Gas piston type drainage device |
| 12/10/2013 | CA2740567C Downhole pump apparatus having decoupleable isolation plug |
| 12/10/2013 | CA2716821C Bottom tag for progressing cavity pump rotor with coiled tubing access |
| 12/10/2013 | CA2683184C Gas restrictor for pump |
| 12/05/2013 | US20130323086 Hydraulic gravity ram pump |
| 12/04/2013 | CN203321812U Plunger pump valve body |
| 12/04/2013 | CN203321793U 采油工作泵 Oil pumps work |
| 12/04/2013 | CN203321792U High-pressure pumping integration equipment |
| 12/04/2013 | CN203321791U Small-pump-diameter rod type oil well pump |
| 12/04/2013 | CN203321790U High-temperature resistance high-emission deviated well oil pump |
| 12/04/2013 | CN203321789U Rod type deloading oil-well pump |
| 12/04/2013 | CN103423135A Hydraulic drive oil pump |
| 12/04/2013 | CN102155189B Balancing torque converting device for beam-pumping unit |
| 11/28/2013 | WO2013177268A1 Gas compressor |
| 11/28/2013 | WO2013174238A1 A multi-pipe composite jet pump |
| 11/27/2013 | CN203308689U Miniature motorless submersible pump |
| 11/27/2013 | CN203308688U Three compound combination flooding oil-well pump for production well |
| 11/27/2013 | CN103410712A Hydraulic deep-well pump |
| 11/27/2013 | CN102338073B Energy-saving oil well pump and installation method |
| 11/21/2013 | WO2013136244A3 Hydraulic mechanical pumping unit with rocking effect |