| 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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| 11/20/2013 | CN203297087U Efficient protective oil pumping device |
| 11/20/2013 | CN103403351A Short length pump having brine resistant seal and rotating wrist pin and related methods |
| 11/20/2013 | CN101705806B Double-balance oil extractor |
| 11/13/2013 | CN203285680U Centrifugal reverse braking device |
| 11/13/2013 | CN203285669U Paraffin control anti-scale abrasion resistant oil well pump |
| 11/13/2013 | CN203285653U Electric submersible plunger oil pump |
| 11/06/2013 | EP2659140A2 Short length pump having brine resistant seal and rotating wrist pin and related methods |
| 11/06/2013 | CN103384767A Mechanical pumping hydraulic unit |
| 11/02/2013 | CA2776270A1 Reciprocating pump drive assembly |
| 10/31/2013 | WO2013160519A1 An equipment for rotating a rotor of a peristaltic pump |
| 10/31/2013 | US20130287597 Coaxial pumping apparatus with internal power fluid column |
| 10/31/2013 | US20130283968 Counterbalance system for pumping units |
| 10/30/2013 | CN203257648U Downhole thrice liquid inlet gas preventing pump |
| 10/30/2013 | CN203257647U Oil well pump capable of realizing direct circulation well washing |
| 10/30/2013 | CN203257646U Double-sealing short plunger piston oil-drainable valve ball automatic closing type oil well pump |
| 10/24/2013 | WO2012082384A3 Pulsation dampening system for a reciprocating pump |
| 10/24/2013 | DE102011018755B4 Rückdrehsicherung für Bohrlochpumpen Reverse protection for well pump |
| 10/24/2013 | DE102007058068B4 Vorrichtung und Verfahren zum Fördern von Flüssigkeiten, insbesondere Thermalwasser, und Verwendung einer derartigen Vorrichtung Apparatus and method for conveying liquids, in particular thermal water, and use of such a device |
| 10/23/2013 | EP2652329A2 Pulsation dampening system for a reciprocating pump |
| 10/23/2013 | CN203248357U Large-runner pulverized coal prevention oil well pump |
| 10/23/2013 | CN203248343U Tubular efficient deep well oil-well pump |
| 10/23/2013 | CN203248342U Pressure-transmitting pump contact and seal type oil well pump with oil drainage device |
| 10/23/2013 | CN203248341U Oil pumping pump preventing fixed valve from leaking |
| 10/23/2013 | CN103362788A Back-filling oil well pump |
| 10/23/2013 | CN103362787A High negative pressure deep-drawing oil well pump |
| 10/22/2013 | CA2749586C System and method for a combined submersible motor and protector |
| 10/22/2013 | CA2712882C Latching mechanism for changing pump size |
| 10/22/2013 | CA2696600C Hydraulically actuated downhole pump with gas lock prevention |
| 10/22/2013 | CA2576182C Fluid pump drive |
| 10/16/2013 | CN203239543U Oil-well pump applied to inclined well |
| 10/16/2013 | CN203239542U Oil-drainable tube type oil-well pump |
| 10/16/2013 | CN103352832A Protected type hydraulic piston pump |
| 10/10/2013 | WO2013149932A2 Method of pumping fluid, pulse generator for use in the method, and pump system comprising the pulse generator |
| 10/09/2013 | EP2647844A1 Method of pumping fluid |
| 10/02/2013 | EP2643541A1 Submersible progressive cavity pump driver |
| 10/02/2013 | CN103334911A Steady support type hydraulic piston pump |
| 10/02/2013 | CN101255907B Transmission system for pump drive |
| 10/01/2013 | CA2667695C Debris removal apparatus for a pump and method |
| 09/28/2013 | CA2810535A1 Wiper assembly for a pump |
| 09/26/2013 | WO2012145348A3 Electrical submersible pump with reciprocating linear motor |
| 09/25/2013 | CN203214284U Tubing liner pump for scraping sand and pumping heavy oil |
| 09/25/2013 | CN102155390B Flexible transmission mechanism for deep well screw pump |
| 09/25/2013 | CN101881145B Tower frame type combined transmission numerically controlled pumping unit |
| 09/20/2013 | CA2772462A1 Method, system, and device for displaying operating parameters of reciprocating oil well pumping apparatus |
| 09/19/2013 | US20130243613 Coaxial pumping apparatus with internal power fluid column |
| 09/18/2013 | CN203201769U Cylinder-free plunger pump used under oil well |
| 09/18/2013 | CN103306954A Underground hydrodynamic oil pumping system |
| 09/18/2013 | CN103306953A Swabbing oil recovery pump with double fixed valves |
| 09/17/2013 | US8535017 Hydraulic gravity ramp pump |
| 09/12/2013 | WO2013131178A1 Counterweighted pump jack with reversible motors |
| 09/11/2013 | CN203189250U Hollow rod oil well pump in well |
| 09/11/2013 | CN203189249U Tubing oil pump capable of achieving tool seat sealing under pump |
| 09/11/2013 | CN103291605A Efficient protective oil pumping device and application method |
| 09/04/2013 | EP2633155A1 Method of making progressing cavity pumping systems |
| 09/04/2013 | CN203175817U High-temperature large-caliber oil well pump for oil field |
| 09/04/2013 | CN203175816U Hydraulic-drive plunger oil well pump |
| 09/04/2013 | CN103277290A Integrated high-pressure pumping equipment |
| 09/04/2013 | CN101608612B Double-plunger rotary oil well pump |
| 09/03/2013 | US8523543 Pumping assembly |
| 08/28/2013 | CN203161504U Pumping assistance anti-jamming device for pumping well |
| 08/28/2013 | CN203161503U Novel holddown-prevention oil-well pump |
| 08/21/2013 | CN203146288U Lateral flow backwashing soft sealing solid plunger pump |
| 08/21/2013 | CN203146287U Novel oil-drainable sand-prevention oil well pump |
| 08/21/2013 | CN203145897U Multifunctional oil pump |
| 08/21/2013 | CN101781979B Hydraulic driving oil extraction equipment |
| 08/15/2013 | WO2012055036A8 Submersible progressive cavity pump driver |
| 08/15/2013 | CA2805584A1 Wellhead drive brake system |
| 08/14/2013 | CN203130452U Intelligent linear motor oil extraction system |
| 08/14/2013 | CN203130451U Ultra-deep load-shedding anti-gas oil pump |
| 08/14/2013 | CN203130450U Linear-motor two-way oil well pump |
| 08/14/2013 | CN203130449U Device for reducing pressure and increasing oil |
| 08/14/2013 | CN103244395A Tertiary-recovery oil well pump |
| 08/14/2013 | CN101454570B Hydraulically actuated submersible pump |
| 08/08/2013 | WO2012097773A3 Modular anti-torque mechanism |
| 08/08/2013 | US20130202460 Fluidics pumping device |
| 08/08/2013 | US20130202459 Water-powered pump actuation system |
| 08/07/2013 | CN203114593U Driving device of direct-transmission type screw pump |
| 08/07/2013 | CN203114592U Horizontal sand prevention thickened oil pump |
| 08/06/2013 | CA2710783C Pump drive head with stuffing box |
| 08/03/2013 | CA2804435A1 Stator magnet wire end coil retention system |
| 07/31/2013 | CN203098229U Ejection-prevention and sealing anchoring device of oil-submerged pump driven by linear motor |
| 07/31/2013 | CN203098228U Anti-mud eccentric-wear-resistant oil well pump |
| 07/31/2013 | CN203098227U Anti-mud eccentric-wear-resistant rod-type oil well pump |
| 07/31/2013 | CN203098226U Ground direct drive screw pump oil production device |
| 07/31/2013 | CN203098225U Integral-cylinder oil well pump |
| 07/31/2013 | CN102297128B Plunger and oil suction pump |
| 07/31/2013 | CN102155391B Valve type deep well axial plunger pump |
| 07/31/2013 | CA2804171A1 Reciprocating pump with chamber-charging mechanism |
| 07/30/2013 | US8496450 Compressor system for supplying compressed air to a commercial vehicle, and method for operating the compressor system |
| 07/24/2013 | CN203081421U Dynamic lifting device of horizontal well logging |
| 07/24/2013 | CN103216433A Constant-pressure anti-sticking bailing pump |
| 07/23/2013 | CA2705959C Plug in pump for inverted shroud assembly |
| 07/17/2013 | CN203067246U Moveable connection type injection and suction dual-purpose oil well pump for oil production |
| 07/17/2013 | CN203067245U Cam piston type deep well pump |
| 07/16/2013 | CA2599447C Pumping installation for a gas producing well |
| 07/11/2013 | US20130175093 Apparatus and Methods Utilizing Progressive Cavity Motors and Pumps with Independent Stages |
| 07/10/2013 | CN203051067U Inclined shaft oil well pump |
| 07/10/2013 | CN203051066U Semispherical self-rotating type plunger oil well pump |
| 07/10/2013 | CN203051065U Expanding and shrinking type self-rotating plunger piston oil-well pump |
| 07/10/2013 | CN203051064U Oil well pump |