| 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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| 04/10/2013 | CN202867147U Piston type oil exploitation pump |
| 04/10/2013 | CN202867146U Long stroke sand prevention oil well pump |
| 04/10/2013 | CN202867145U Small displacement solid plunger oil well pump |
| 04/10/2013 | CN202867144U Injection-production pump with long plunger |
| 04/10/2013 | CN202866764U Combination pump deep pumping device |
| 04/10/2013 | CN103032298A Efficient general type piston oil-well pump |
| 04/10/2013 | CN101956694B Coal powder-prevention tubular discharging and extracting pump |
| 04/04/2013 | WO2013048931A1 Hydraulically driven, down-hole jet pump |
| 04/04/2013 | CA2844539A1 Hydraulically driven, down-hole jet pump |
| 04/03/2013 | CN202851318U Oil pumping device with bottom anti-eccentric |
| 04/03/2013 | CN102052062B Energy-saving tower-type oil pumping device |
| 04/03/2013 | CN101532486B Hydraulic pump, oil pumping unit, oil pumping module and oil pumping system |
| 04/03/2013 | CN101238646B Method for transmitting data between a pump unit and a control device, and an appropriately designed pump system |
| 03/28/2013 | US20130078120 Ejector-Less Vacuum Creation Pump Using Suction |
| 03/28/2013 | CA2849074A1 Gas lift assist for fossil fuel wells |
| 03/27/2013 | CN202833098U Heavy oil production increasing pump |
| 03/27/2013 | CN202833094U Speed reducer of pumping unit |
| 03/27/2013 | CN202833085U Oil well pump pumping-assisting production-increase device |
| 03/27/2013 | CN202833071U Flow monitoring oil exploitation pump |
| 03/27/2013 | CN202833059U Corrosion resisting oil exploitation pump |
| 03/27/2013 | CN202833058U Special plunger pump for coal-bed gas well |
| 03/27/2013 | CN202833057U Sand prevention oil-well pump |
| 03/27/2013 | CN102996100A Drilling pump pull rod sealing piece fixing method and fixing device thereof |
| 03/26/2013 | CA2718565C Plunger for performing artificial lift of well fluids |
| 03/21/2013 | WO2013040334A2 Boundary layer disk turbine systems for controlling pneumatic devices |
| 03/21/2013 | WO2012177179A3 Downhole pump assembly |
| 03/21/2013 | US20130071259 Boundary Layer Disk Turbine Systems for Controlling Pneumatic Devices |
| 03/21/2013 | CA2848391A1 Boundary layer disk turbine systems for controlling pneumatic devices |
| 03/20/2013 | CN202811300U Whole cylinder oil well pump achieving forward-direction well flushing |
| 03/14/2013 | WO2013033959A1 Oil pumping machine with gear reciprocating on rack |
| 03/13/2013 | CN202789505U Oil well pump capable of cleaning scaling automatically |
| 03/13/2013 | CN202789482U Oil extraction integrated string preventing gas |
| 03/13/2013 | CN202789460U Oil pump preventing gas |
| 03/12/2013 | US8393260 Valve cap |
| 03/07/2013 | US20130058798 Hydraulic oil well pumping apparatus |
| 03/06/2013 | EP2564067A1 A continuous rod pump drive system |
| 03/06/2013 | EP2564019A1 Pumping system |
| 03/06/2013 | CN202768390U Sedimentation impurities eliminating device for oil well pump |
| 03/06/2013 | CN202768376U Ring sealing type deep-drawing load-reducing device |
| 03/06/2013 | CN202768356U Intelligent reversing electric submersible rodless oil pumping device |
| 03/06/2013 | CN202768355U Eccentric-wear-proof oil well pump |
| 03/06/2013 | CN202768354U Intelligent reversing integrated tubing pump oil production device |
| 03/06/2013 | CN202768353U Solid plunger deloading oil-well pump |
| 03/06/2013 | CN202768352U Drainable gas-tight oil-well pump with long plunger |
| 03/06/2013 | CN102953964A Hydraulic oil well pump |
| 03/06/2013 | CN102953725A Horizontal well logging dynamic lifting device |
| 03/06/2013 | CN101776066B Wind-electricity complementary hydraulic oil pumping device |
| 03/05/2013 | CA2553320C Hydraulic motor arrangement and method of operating a hydraulic motor |
| 02/27/2013 | CN202756213U Oil production device |
| 02/27/2013 | CN202756212U Hinge plunger thick oil pump |
| 02/27/2013 | CN102943659A Hydraulic pump oil production method and hydraulic pump |
| 02/21/2013 | WO2013023466A1 Tower-type double-chain belt oil pumping machine |
| 02/21/2013 | US20130045116 Beamless Mechanic-reversing Long Stroke Pumping Unit |
| 02/21/2013 | CA2808602A1 Tower-type double-chain belt pumping unit |
| 02/20/2013 | CN202746158U Ring seal air protection deviated well oil-well pump |
| 02/20/2013 | CN102937082A Oil well pump |
| 02/14/2013 | WO2013021387A1 Well pump system |
| 02/13/2013 | CN202732329U Layering oil production device capable of controlling flowing pressure of upper and lower production layers |
| 02/13/2013 | CN202732299U Injection and hot extraction oil-well pump |
| 02/13/2013 | CN202732298U Guiding cyclone oil-well pump |
| 02/13/2013 | CN202732297U Rodless hydraulic feedback oil pump |
| 02/13/2013 | CN202732296U Separate-layer and commingled output defueling pump with upper plunger and lower plunger separated |
| 02/13/2013 | CN102926980A Oil well pump |
| 02/13/2013 | CN102162359B High-precision pumping device used for formation tester |
| 02/09/2013 | CA2784421A1 Reciprocating rod pump for sandy fluids |
| 02/06/2013 | CN102913435A Speed reducer for oil pumping unit |
| 02/06/2013 | CN102913434A Speed reducer for oil pumping unit |
| 02/06/2013 | CN102913425A Oil well pump |
| 01/31/2013 | US20130030721 System and method for determination of polished rod position for reciprocating rod pumps |
| 01/31/2013 | US20130028754 Peristaltic system, fluid delivery device, pipetting device, sleeve and method for operating the peristaltic system |
| 01/30/2013 | CN202707442U Thickened oil pump with long plunger |
| 01/30/2013 | CN202707441U High-efficiency sand prevention solid plunder oil pump |
| 01/30/2013 | CN202707440U Gas-proof partial pressure commingled production pump |
| 01/30/2013 | CN202707439U Sandproofing oil well pump |
| 01/30/2013 | CN202707438U Feedback oil well pump of inclined shaft with double long plunger pistons |
| 01/30/2013 | CN101936283B Two-pipe jet pump seat |
| 01/24/2013 | WO2013010244A1 Apparatus and methods for producing natural gas using a gas recycle phase to remove liquid from a well |
| 01/24/2013 | US20130022480 Mechanical-Hydraulic Pumping System |
| 01/23/2013 | CN202690417U Numerical-control reciprocating-type oil-submersible electric pump lifting system with airproof device |
| 01/23/2013 | CN202690393U Single-core submersible cable linear motor rodless pump |
| 01/23/2013 | CN202690392U Double-tail pipe sand settling type oil extraction pump |
| 01/23/2013 | CN202690391U Novel anti-blocking deep-pumping oil-well pump of solid plunger |
| 01/23/2013 | CN101748994B Beam-pumping unit |
| 01/22/2013 | CA2520260C A pumping unit with variable work stroke and return stroke torque factor characteristics |
| 01/17/2013 | WO2013009432A2 Poppet valve with integrated dampener |
| 01/17/2013 | WO2013007566A1 Downhole hydraulic pump |
| 01/17/2013 | WO2012092452A3 Short length pump having brine resistant seal and rotating wrist pin and related methods |
| 01/17/2013 | CA2840469A1 Downhole hydraulic pump |
| 01/09/2013 | EP2543812A1 Downhole hydraulic pump |
| 01/09/2013 | CN202659473U Sand-prevention oil-well pump |
| 01/09/2013 | CN202659472U Submersible linear motor oil-sucking pump |
| 01/09/2013 | CN202659471U Linear motor dedicated oil pump |
| 01/09/2013 | CN202659470U Multifunctional motor oil-sucking pump |
| 01/09/2013 | CN202659469U Energy-saving motor oil-well pump |
| 01/09/2013 | CN202659468U Scale blockage preventing defueling pump |
| 01/08/2013 | US8348627 Digital hydraulic pump/motor torque modulation system and apparatus |
| 01/08/2013 | US8347954 Plunger lift system with seal and ball detent arrangement |
| 01/02/2013 | CN202646240U Hydraulic drive device for downhole oil well pump |
| 01/02/2013 | CN202645954U Deep-pumping well oil well pump |
| 01/02/2013 | CN202645953U Immersion rod type heavy oil pump |