| 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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| 04/21/2010 | CN201439752U Pipe type pump scaler device |
| 04/21/2010 | CN201439749U Wear-prevention oil pump |
| 04/21/2010 | CN201439746U Air compressor |
| 04/21/2010 | CN101696687A Semi-closed double-screw oil-gas mixed pump for underwater operation |
| 04/21/2010 | CN101696683A Chemical combined flooding serial soft-plunger anti-scaling oil-well pump |
| 04/21/2010 | CN101696624A External rotor motor direct traction type oil extractor |
| 04/20/2010 | CA2683184A1 Gas restrictor for pump |
| 04/15/2010 | US20100092314 Deep force pump for oil wells |
| 04/14/2010 | CN201437768U Liquid-discharge process unit for power pump of hydraulic oil pipe |
| 04/14/2010 | CN201437715U Low-frequency-stroke oil-extractor reducer with lubricating system |
| 04/14/2010 | CN201437714U Power balance oil extractor |
| 04/06/2010 | US7690425 Data logger plunger and method for its use |
| 04/06/2010 | CA2504547C Internal shock absorber plunger |
| 04/06/2010 | CA2438561C Bearing assembly for a progressive cavity pump and system for liquid lower zone disposal |
| 03/24/2010 | CN101676516A High-gas-contained well multiphase mixed transportation processing equipment |
| 03/23/2010 | CA2614817C Rod pump control system including parameter estimator |
| 03/23/2010 | CA2389137C Sine wave variable speed drive |
| 03/22/2010 | CA2676833A1 Apparatus for pumping fluids from a well |
| 03/17/2010 | CN201425086Y Easy-disassembled motor pulley |
| 03/17/2010 | CN201425018Y Pipe column drainage pump for oil well |
| 03/17/2010 | CN201425017Y Energy-saving plunger pump |
| 03/17/2010 | CN101672274A Easily-installed adjustable type underground double-screw gas-liquid mixed pumping pump |
| 03/17/2010 | CN101672272A Gas and sand anchor device of electrical submersible pump |
| 03/17/2010 | CN101672269A Liquamatic underground double-screw pump |
| 03/17/2010 | CN101672268A Driving device for directly-driven screw pump |
| 03/17/2010 | CN101672174A Energy-saving uninterrupted non-rod oil pumping device |
| 03/17/2010 | CN101672173A Dual horsehead fine balance energy-saving walking beam pumping unit |
| 03/12/2010 | CA2678560A1 Downhole pumping system |
| 03/10/2010 | EP2161450A1 Water hammer driven air compressor |
| 03/09/2010 | CA2520944C Plunger lift system |
| 03/04/2010 | WO2010025461A2 Systems and methods for driving a pump associated with a subterranean well |
| 03/04/2010 | CA2735579A1 Systems and methods for driving a pump associated with a subterranean well |
| 03/03/2010 | CN201416530Y Deep-well pump with piston with large flow channel and low resistance |
| 03/03/2010 | CN201416423Y Motor removing seat |
| 03/03/2010 | CN201416422Y Oil pumping machine weighted walking beam |
| 02/25/2010 | WO2010021602A2 Pumping equipment |
| 02/25/2010 | WO2009090479A4 Water lubricated line shaft bearing and lubrication system for a geothermal pump |
| 02/24/2010 | CN201412487Y Oilfield special purpose gear shifting speed reducer |
| 02/24/2010 | CN201412348Y Sealing structure body on screw pump driving device |
| 02/24/2010 | CN201412313Y Reciprocating precession type oil-submersible electric pump |
| 02/24/2010 | CN201412312Y Oil pumping device of combination of a plurality of linear motor pumps |
| 02/24/2010 | CN201412125Y Beam stroke-increasing oil pumping unit with automatic variable moment balance and rotating horse head |
| 02/24/2010 | CN201412124Y Safety top screw for fixing balance weight of oil pumping unit |
| 02/24/2010 | CN101655084A Vortex effluent conveyer in natural gas exploitation |
| 02/18/2010 | WO2010018355A2 Top suction fluid end |
| 02/18/2010 | WO2009146713A8 A pumping device for pumping fluid |
| 02/18/2010 | US20100037716 Clampless adjustable polish rod and well drilling equipment comprising same |
| 02/17/2010 | CN201407153Y Multi-cylinder combined full balance hydraulic pumping unit |
| 02/17/2010 | CN201407152Y Concentric-tube column power liquid closed-type circulating hydraulic piston pump |
| 02/17/2010 | CN201407151Y Wear-resistant sand-preventing oil well pump |
| 02/17/2010 | CN201407150Y Mining sinking pump |
| 02/17/2010 | CN101649828A Advanced ceramic pipe type defueling pump |
| 02/16/2010 | CA2499792C Thermal actuated plunger |
| 02/11/2010 | DE102008036528A1 Verfahren zum Betrieb einer mehrpulsigen Kolbenpumpe, mehrpulsige Kolbenpumpe sowie Herstellung einer solchen Method for operating a multipulse piston pump, piston pump, as well as multi-pulse producing such |
| 02/10/2010 | CN201401157Y Hydrodynamic balance column beam-pumping unit |
| 02/10/2010 | CN201401155Y Two-way oil extractor for hydraulic reciprocating piston |
| 02/03/2010 | CN201396338Y Stepless positive and negative device |
| 02/03/2010 | CN201396320Y Ejector |
| 02/03/2010 | CN201396319Y Ejector |
| 02/03/2010 | CN201396278Y Multi-head anti-corrosive screw pump in equal wall thickness |
| 02/03/2010 | CN201396277Y Antisepsis screw pump in equal wall thickness |
| 02/03/2010 | CN201396270Y Particle deposition-prevention pump |
| 02/03/2010 | CN201396120Y Leveling device for oil pumping machine foundation |
| 02/03/2010 | CN201396119Y Winch intelligent vertical balance type pumping device |
| 02/03/2010 | CN201396117Y Brake transmission device of beam-balanced pumping unit |
| 02/02/2010 | US7656305 Monitoring system |
| 01/27/2010 | CN201391442Y Feedback-type defueling pump |
| 01/27/2010 | CN201391441Y Novel inclined shaft oil well pump |
| 01/27/2010 | CN201391440Y Bypass oil well pump |
| 01/27/2010 | CN201391290Y Vertical belt pumping unit |
| 01/27/2010 | CN201391288Y Front-mounted beam type automatic variable moment balancing pumping unit |
| 01/27/2010 | CN201391285Y Outer cycloidal walking-beam type oil pumping unit |
| 01/27/2010 | CN101634293A Rodless pump |
| 01/27/2010 | CN100585182C High power oil-submersible linear permanent magnetic step motor plunger pump |
| 01/26/2010 | CA2389070C Fully automatic machine for oil extraction |
| 01/20/2010 | CN201386545Y Anticollision distance adjuster of pincer type pumping unit |
| 01/20/2010 | CN201386526Y Plunger capture device used for plunger gas-lift well mouth |
| 01/20/2010 | CN101629565A Multi-support hydraulic pressure self-sealing plunger pump |
| 01/13/2010 | CN201381974Y Energy-saving submersible electric pump driven by switched reluctance motor |
| 01/13/2010 | CN201381973Y Autocontrol energy-saving emulsion liquid pumping plant |
| 01/13/2010 | CN201381972Y Clamp spring rod type oil-well pump |
| 01/13/2010 | CN201381971Y Energy-saving thick oil collection and transportation device |
| 01/13/2010 | CN201381970Y Large-flow-passage high-efficient oil-well pump |
| 01/13/2010 | CN201381840Y Large-size long-stroke heavy-load energy-saving oil pumping unit |
| 01/13/2010 | CN201381834Y Device for locking balance weight of oil pumping unit |
| 01/13/2010 | CN201381833Y Changeable-moment arm automatic reverse wheel of oil pumping unit |
| 01/13/2010 | CN101624981A Double-inlet and single-outlet submersible screw pump oil extraction device |
| 01/13/2010 | CN100580249C Depressed vacuum ground oil-absorbing machine |
| 01/12/2010 | CA2510919C Plunger actuated pumping system |
| 01/07/2010 | WO2009090479A3 Water lubricated line shaft bearing and lubrication system for a geothermal pump |
| 01/07/2010 | US20100003150 Wear rings for downhole pump |
| 01/06/2010 | EP1629195B1 Hydrodynamic bearing runner for use in tilting pad thrust bearing assemblies for electric submersible pumps |
| 01/06/2010 | CN201377556Y Automatic tensioner |
| 01/06/2010 | CN201377418Y Reaction torque releasing device of oil production screw pump |
| 01/06/2010 | CN201377416Y Multi-functional straight line sliding guide sleeve |
| 01/06/2010 | CN201377414Y Sand-control wear pump |
| 12/31/2009 | US20090321083 Method and apparatus for removing liquid from a gas well |
| 12/31/2009 | DE102008030122A1 Getriebelose Kolbenpumpe Gearless piston pump |
| 12/30/2009 | WO2009156500A1 Gearless piston pump |
| 12/30/2009 | CN201372973Y Fixed multi-nozzle jet pump |