| 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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| 04/25/2012 | CN202203092U 一种实心柱塞式抽油泵 One kind of solid plunger pump |
| 04/25/2012 | CN202203091U 一种防止停机时被沙粒卡死的深井泵 A stop is to prevent sand stuck deep well pump |
| 04/25/2012 | CN101016834B 直线驱动式螺杆泵采油系统 Linear-driven screw pump system |
| 04/18/2012 | CN202194813U 机械耐高温限位锁定杆式泵 Mechanical locking rod pump high temperature limit |
| 04/18/2012 | CN202194625U 新型游梁平衡抽油机 The new Walking Beam Pumping Unit |
| 04/18/2012 | CN102418500A 直控式连续定量分层配产油管柱 Direct-controlled continuous quantitative hierarchical production tubing string with |
| 04/12/2012 | US20120087806 Fluid Sealing Elements and Related Methods |
| 04/11/2012 | EP2438264A2 Hydraulic oilfield lift pump |
| 04/11/2012 | CN102410003A 组合式节能抽油机 Combined saving pumping |
| 04/05/2012 | WO2012044203A1 Double-action sucker-rod well pump |
| 04/05/2012 | WO2012044200A1 Well-drilling sucker-rod pump |
| 04/05/2012 | CA2812741A1 Double-action sucker-rod well pump |
| 04/04/2012 | CN202182013U 防砂抽油泵 Sand pump |
| 04/04/2012 | CA2752371A1 Multi-sleeve plunger for plunger lift system |
| 03/30/2012 | CA2754242A1 Plunger lift and safety valve system |
| 03/29/2012 | WO2012012028A3 Pressure mitgating dielectric debris seal for pothead interface |
| 03/29/2012 | US20120076668 Wellbore fluid removal systems & methods |
| 03/28/2012 | EP2432967A1 Electric submersible pumping system for dewatering gas wells |
| 03/28/2012 | EP2432966A1 Cable suspended pumping system |
| 03/28/2012 | CN202176495U 超稠油注采抽油泵 Super heavy oil injection and production pump |
| 03/28/2012 | CN102392620A Wheel type intelligent pumping unit |
| 03/22/2012 | WO2012036591A1 Differential rod pump |
| 03/22/2012 | DE102008018407B4 Unterwasserförderaggregat Underwater delivery unit |
| 03/21/2012 | CN102384076A Digital-control reciprocating balancing and damping device for electric submergible pump |
| 03/21/2012 | CA2752787A1 Wellbore fluid removal systems and methods |
| 03/20/2012 | US8136586 Safety clamp for walking beam compressor |
| 03/15/2012 | US20120063930 Manual/pneumatic pump structure |
| 03/14/2012 | CN202165056U 防尘大齿轮天平式抽油机 Dust large scale pumping unit gear |
| 03/14/2012 | CN102374160A Multichannel oil pump |
| 03/14/2012 | CN102374159A High pressure pump |
| 03/13/2012 | CA2751796A1 Electrical submersible pump system having high temperature insulation materials and buffered lubricant |
| 03/08/2012 | WO2011147031A4 Downhole gas release apparatus |
| 03/07/2012 | CN202157942U 双游动式出油阀管式抽油泵 Dual swimming style oil pump valve tube |
| 03/06/2012 | US8128383 Top seal assembly |
| 03/01/2012 | US20120051953 Energy management for conversion of methanol into gasoline and methanol into olefins |
| 02/29/2012 | CN102364102A Sand pump driving head |
| 02/24/2012 | CA2750306A1 Reciprocating pump flow control |
| 02/22/2012 | CN102359445A Screw pump ground driving device with three-end-face mechanical seal |
| 02/22/2012 | CN102359361A Intelligent oil pumping system |
| 02/21/2012 | US8118089 Down hole delivery system |
| 02/21/2012 | CA2481135C Motor protector |
| 02/15/2012 | CN101709775B 抽油机减速箱油道解堵的方法 Pumping gearbox oil channel plugging method |
| 02/09/2012 | US20120031208 Beam pumping unit for inclined wellhead |
| 02/08/2012 | CN202140286U 新型节能减载抽油泵 New energy-saving pump load shedding |
| 02/08/2012 | CN102345589A Dual-track and dual-acting oil extraction device |
| 02/02/2012 | WO2012012896A1 Downhole pump with a pressure sequencing valve |
| 02/02/2012 | CA2803208A1 Downhole pump with a pressure sequencing valve |
| 02/01/2012 | CN202132218U 一种立式液压钻井泵 One kind of vertical hydraulic drilling pump |
| 02/01/2012 | CN202132217U 气压式采石油泵 Pneumatic pumps quarrying |
| 02/01/2012 | CN102338073A Energy-saving oil well pump and installation method |
| 01/26/2012 | WO2012012028A2 Pressure mitgating dielectric debris seal for pothead interface |
| 01/26/2012 | CA2806201A1 Pressure mitigating dielectric debris seal for a pothead interface |
| 01/25/2012 | CN101629483B Power balance oil extractor |
| 01/24/2012 | CA2554400C Variable displacement reciprocating pump |
| 01/19/2012 | WO2012006951A1 Tower assembly transmission numerical controlled oil extractor |
| 01/19/2012 | WO2011150213A3 Deployment of downhole pump using a cable |
| 01/19/2012 | WO2011147031A3 Downhole gas release apparatus |
| 01/18/2012 | CN202117900U Defueling pump with double filling valves |
| 01/18/2012 | CN202117637U Dynamic balance beam oil pumping unit |
| 01/11/2012 | CN202108710U Long plunger sand-proof clamping rod oil well pump |
| 01/11/2012 | CN202108709U Blowout-control rod-type oil-well pump |
| 01/11/2012 | CN202108479U Reciprocating electric pump device for liquid collection in oil, gas and coal well |
| 01/11/2012 | CN102312824A Deep seawater pumping method and water pumping device |
| 01/11/2012 | CN102312659A Pollution-free well workover process for oil field |
| 01/11/2012 | CN101539004B Epicycloidal beam pumping unit |
| 01/10/2012 | CA2683262C Adapter for motor lead extension to electric submersible pump |
| 01/10/2012 | CA2455742C Rotary drivehead for downhole apparatus |
| 01/04/2012 | CN202100432U Pressure balance device for diaphragm type sand control oil-well pump |
| 01/04/2012 | CN202100431U Underground automatic reciprocating fluid plunger pump with large discharging volume |
| 01/04/2012 | CN202100430U Sand preventing rod pump used for mining coal bed gas |
| 01/04/2012 | CN202100429U Dual-pipe pump for pumping oil well liquid with high sand content ratio |
| 01/04/2012 | CN202100242U Improved rolling screw driving straight line oil pumping machine |
| 01/04/2012 | CN202100239U Long-stroke oil pumping unit with reversing speed reducer |
| 01/04/2012 | CN102305051A Temperature-controlled umbrella type gas lift plunger |
| 01/03/2012 | CA2693311C Double-acting reciprocating downhole pump |
| 01/03/2012 | CA2666646C A belt shock absorber for tower belt-driven pumping unit |
| 12/29/2011 | US20110314959 Cross-Jack Counterbalance System |
| 12/29/2011 | DE102010026239A1 Unterwasserförderaggregat mit einer Pumpe und einer Antriebseinrichtung Underwater delivery unit with a pump and a driving device |
| 12/29/2011 | DE102010025491A1 Rückhalteeinrichtung zur Vermeidung von feststoffsedimentation in Bohrlöchern Restraint to prevent solids sedimentation in boreholes |
| 12/28/2011 | CN202091159U 螺杆泵高压机械密封地面驱动装置 Ground screw drives high pressure mechanical seal |
| 12/28/2011 | CN202091158U 一种可旋转偏心测试螺杆泵驱动装置 A revolving eccentric screw pump test drive |
| 12/28/2011 | CN202091157U 一杆双抽抽油泵 One pair of pumping pump |
| 12/28/2011 | CN202091156U 防砂卡杆式抽油泵 Sand cards rod pump |
| 12/28/2011 | CN202091155U 分抽混出抽油泵 Points out the pump pumping mix |
| 12/28/2011 | CN102297128A 柱塞及抽油泵 Plunger and pump |
| 12/27/2011 | US8083505 Wear rings for downhole pump |
| 12/22/2011 | WO2011157337A1 Extracting device having a connecting rod and method for controlling an extracting device having a connecting rod and at least one counterweight |
| 12/21/2011 | CN102287358A 长柱塞式双筒防煤粉排采泵 Binoculars anti pulverized long plunger pump drainage |
| 12/21/2011 | CN102287169A 滚筒塔架式抽油机 Drum tower type pumping |
| 12/20/2011 | US8079831 Submersible pump having a two-step control hydraulic valve |
| 12/20/2011 | CA2497714C Data logger plunger |
| 12/14/2011 | CN202073757U 顶杆式防气锁抽油泵 Anti-lock style gas ejector pump |
| 12/14/2011 | CN202073756U 单筒防垢抽油泵 Monocular scale pump |
| 12/14/2011 | CN202073755U 适合大斜度井的深井抽油泵 Highly deviated wells for deep well pump |
| 12/14/2011 | CN202073537U 双井节能抽油机 Shuangjing saving pumping |
| 12/14/2011 | CN202073536U 塔架式组合传动数控抽油机 NC pumping transmission tower rack combination |
| 12/14/2011 | CN102278298A 一种地层测试快速泵抽模块 One kind of formation testing fast pumping module |
| 12/14/2011 | CN102278093A 导杆式抽油机 Guide rod pumping units |
| 12/08/2011 | WO2011152936A1 Manual emergency water pump system |
| 12/08/2011 | US20110300008 Compact cable suspended pumping system for lubricator deployment |