| 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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| 04/27/2011 | CN201810534U Anti-abrasion efficient defueling pump |
| 04/27/2011 | CN201810533U Constant-feedback-force thick oil pump |
| 04/27/2011 | CN201810281U Balancing device of pumping unit |
| 04/27/2011 | CN201810278U Electric bottom-moving long-stroke oil pumping machine |
| 04/27/2011 | CN102032157A Ground driving device of screw pump |
| 04/27/2011 | CN102032156A Hydraulic oil suction pump with bidirectional plunger |
| 04/26/2011 | CA2438559C Downhole latch |
| 04/23/2011 | CA2716821A1 Bottom tag for progressing cavity pump rotor with coiled tubing access |
| 04/20/2011 | CN201802599U Rodless axial product moment-type oil-well pump |
| 04/20/2011 | CN201802598U Rod-free radial product moment oil pump |
| 04/20/2011 | CN201802597U Coal powder-preventing tubular draining and mining pump |
| 04/20/2011 | CN201802596U One-trip injection-projection oil pump for horizontal well |
| 04/20/2011 | CN201802595U Drilling pump |
| 04/20/2011 | CN102022310A Low-differential-pressure synchronous dual-fixed-valve deep-well pump |
| 04/20/2011 | CN101144377B Oil well sucker rod pump oil pumping completion tubular pile plugging device with pressure |
| 04/15/2011 | CA2812709A1 Calculation of downhole pump fillage and control of pump based on said fillage |
| 04/15/2011 | CA2717720A1 Calculation of downhole pump fillage and control of pump based on said fillage |
| 04/13/2011 | CN201794562U Oil pumping machine capable of mechanically changing speed and direction |
| 04/13/2011 | CN201794561U Novel tower frame type beam-pumping unit |
| 04/12/2011 | CA2551326C Automated control system for oil well pump |
| 04/07/2011 | CA2716685A1 Multi-piece pressure operated rings for a downhole pump plunger |
| 04/06/2011 | EP2304170A1 A pumping device for pumping fluid |
| 04/06/2011 | CN201786622U Oil pump with oil layer dredge function |
| 04/06/2011 | CN201786621U Oil pump with long piston and annular sealing for antiscale |
| 04/06/2011 | CN201786620U High-sealing double-action oil pump |
| 04/06/2011 | CN102003372A Novel defueling pump capable of being checked without lifting pipe column |
| 04/06/2011 | CN102003162A Simple W-shaped traction pumping unit |
| 04/06/2011 | CN101614202B Double-deck defueling pump |
| 03/31/2011 | WO2011008763A3 Threaded rod plunger installation tool |
| 03/31/2011 | WO2011002902A3 Carrier for plunger during disassembly |
| 03/31/2011 | WO2010141405A3 Hydraulic oilfield lift pump |
| 03/30/2011 | CN201778985U Thinning oil-well pump in thickened oil recovery |
| 03/30/2011 | CN201778984U Downwards-released through type oil well pump |
| 03/30/2011 | CN201778983U Flexible metal oil-well pump |
| 03/30/2011 | CN201778982U Floating ring pump |
| 03/30/2011 | CN201778981U High-efficient ring-sealed oil well pump |
| 03/30/2011 | CN201778980U Movable cylinder type multifunctional oil well pump |
| 03/30/2011 | CN201778779U Lower drive friction oil pumping unit |
| 03/30/2011 | CN201778777U Bottom-driven bidirectional-balance friction-reversing-type pumping unit |
| 03/30/2011 | CN101994689A Hydraulically-driven deep well double-screw pump |
| 03/29/2011 | US7914266 Submersible pumping system and method for boosting subsea production flow |
| 03/24/2011 | US20110070107 Disposable Pump Head |
| 03/23/2011 | CN201771733U Multi-section centering auto-rotation reducing tubing pump |
| 03/23/2011 | CN101649828B Advanced ceramic pipe type defueling pump |
| 03/23/2011 | CN101476557B Brine pump for well and method for fast eliminating internal crystallization of brine pump |
| 03/23/2011 | CN101117956B Anti-scaling, anti-corrosive and sand prevention ceramic oil-well pump and manufacturing method therefor |
| 03/17/2011 | US20110064592 Underwater Delivery Unit |
| 03/16/2011 | CN201763581U Hollow-plunger pump |
| 03/16/2011 | CN101985925A Durable drilling pump |
| 03/09/2011 | CN101387127B Rainwater drain control system and method |
| 03/03/2011 | WO2011022826A1 Artificial lift structures |
| 03/03/2011 | US20110052417 Method of driving a well pump |
| 03/01/2011 | CA2619570C Method and apparatus to pump liquids from well |
| 03/01/2011 | CA2526345C Method and system for optimizing downhole fluid production |
| 02/28/2011 | CA2676767A1 Method of driving a well pump |
| 02/27/2011 | CA2713751A1 Device, computer program product and computer-implemented method for backspin detection in an electrical submersible pump assembly |
| 02/27/2011 | CA2713749A1 Device, computer program product and computer-implemented method for backspin detection in an electrical submersible pump assembly |
| 02/27/2011 | CA2713745A1 Device, computer program product and computer-implemented method for backspin detection in an electrical submersible pump assembly |
| 02/24/2011 | WO2011020177A1 Switching assembly for a hydraulic pump jack |
| 02/24/2011 | US20110044829 pumping system |
| 02/24/2011 | CA2771458A1 Switching assembly for a hydraulic pump jack |
| 02/20/2011 | CA2712882A1 Latching mechanism for changing pump size |
| 02/18/2011 | CA2675497A1 Switching assembly for a hydraulic pump jack |
| 02/16/2011 | CN201747575U Self-pressing compensation combination tubing pump |
| 02/16/2011 | CN201747574U Automatic oil draining type corrosion, scale and sand resisting pump |
| 02/16/2011 | CN201747573U Multifunctional sand setting and air exhaust oil-extraction pump |
| 02/10/2011 | WO2011014954A1 Fluid driven reciprocating linear motor |
| 02/10/2011 | CA2769919A1 Fluid driven reciprocating linear motor |
| 02/09/2011 | CN201739161U Intermediate draw bar oil seal of power end of drilling pump |
| 02/09/2011 | CN201739147U Rodless oil well lifting system |
| 02/09/2011 | CN201739146U Separate-pumping and mixed-outputting oil well pump |
| 02/09/2011 | CN201739145U Oil well pump with oil-water separation function |
| 02/09/2011 | CN201739144U Anti-embedded oil-well pump |
| 02/09/2011 | CN201738886U Long-stroke dual-well tower type oil sucking machine |
| 02/09/2011 | CN101967965A Motor direct-driven oil production method |
| 02/04/2011 | CA2709048A1 Artificial lift and transfer pump |
| 02/03/2011 | US20110024124 Caisson Two-Phase Emulsion Reducer |
| 02/02/2011 | EP2280174A1 Hydraulic cylinder, oil pumping unit, oil pumping module and oil pumping system |
| 02/02/2011 | CN201730820U High-efficient composite pump cylinder tubular pump |
| 02/02/2011 | CN101205805B Oil production string |
| 01/27/2011 | WO2010118535A4 Artificial lift and transfer pump |
| 01/26/2011 | CN201723423U Mechanical reversing reciprocating plunger pump of submersible motor |
| 01/26/2011 | CN101956694A Coal powder-prevention tubular discharging and extracting pump |
| 01/25/2011 | US7874367 Low clearance downhole pump |
| 01/20/2011 | WO2011008763A2 Threaded rod plunger installation tool |
| 01/20/2011 | WO2011008391A2 Lift wash-through facility |
| 01/20/2011 | US20110014071 Protector for electrical submersible pumps |
| 01/19/2011 | CN201714644U Inclined shaft oil pump with small outer diameter |
| 01/19/2011 | CN201714640U Corrugated pipe booster drill pump |
| 01/19/2011 | CN101949279A Counterweight balancing vertical hydraulic pumping unit |
| 01/19/2011 | CN101949277A Oil extraction method of weight adding under pump and oil well pump with weight adding under pump |
| 01/19/2011 | CN101949276A Rolling spiral drive linear pumping unit |
| 01/13/2011 | US20110008184 Compressor unit |
| 01/13/2011 | US20110005771 Pfpe oils in esp motors, protectors and potheads |
| 01/12/2011 | EP2273116A2 System and method for motor drive control pad and drive terminals |
| 01/12/2011 | CN201705636U Separate liquid delivery type airtight zonal-production pump for multi-zone production |
| 01/12/2011 | CN201705635U Sand prevention deloading linear motor oil extraction pump |
| 01/12/2011 | CN201705634U Double-working barrel oil pump for continuously pumping |
| 01/12/2011 | CN201705633U Anti-reverse double-function electric submersible screw pump |
| 01/12/2011 | CN201705632U Rodless hydraulic deep oil well pump |