Patents
Sitemap › F04 - Positive-displacement machines for liquids; Pumps for liquids or elastic fluids › F04B - Positive-displacement machines for liquids; Pumps › F04B 47 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
Patents for F04B 47 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps (5,485)
01/2013
01/02/2013CN202645952U Injection type oil-inlet oil well pump
01/02/2013CN202645951U Energy-saving rod-type deep well oil pump
01/02/2013CN102859115A 泵送系统 Pumping system
12/2012
12/27/2012WO2012177179A2 Downhole pump assembly
12/27/2012US20120328457 Unlimited Stroke Drive Oil Well Pumping System
12/27/2012US20120328455 Hydraulic Fan Assembly for an Engine Ventilation System
12/27/2012CA2744324A1 System and method for determination of polished rod position for reciprocating rod pumps
12/26/2012CN202628473U Oil downhole drive oil extraction speed reducer
12/26/2012CN202628472U Hydraulic defueling pump with low energy consumption
12/26/2012CN202628471U Long-plunger anti-gas separate-extraction mixed-yield oil well pump
12/26/2012CN1840904B Ultra-low speed big torsional moment special-shape motor dragging and tower type high-efficiency low-consumption intelligent pumping unit
12/26/2012CN102840127A Novel anti-settling sand stuck pump device
12/19/2012CN202612053U Large negative pressure deep pumping type oil pump
12/19/2012CN102828939A Electric submersible bidirectional tubular oil well pump with buffer
12/19/2012CN102828938A Screw pump high-pressure mechanical seal ground driving device
12/18/2012CA2514916C Drive assembly for a reciprocating pump utilizing a linear actuator
12/13/2012CA2791489A1 Improved unibody lubricator with externally threaded nipple
12/12/2012CN202597037U Underground driving screw oil pump system
12/12/2012CN202597036U Separate-extraction separate-discharge oil well pump
12/12/2012CN202597035U Fluid feedback draining and mining pump used for coal bed gas development
12/12/2012CN102817820A Hydraulic-driving-type oil pumping and boosting pump
12/11/2012CA2716819C Progressing cavity pump rubber reinforcement device for rotor alignment
12/05/2012CN202579126U Novel oil well pump
12/05/2012CN202579125U Perforation, test and oil pumping integrated oil-well pump
12/05/2012CN202579124U Rotary driving type multi-plunger oil well pump
12/05/2012CN202579123U Double-acting oil well pump with high discharge capacity
11/2012
11/28/2012CN202560538U Direct-drive screw pump variable frequency driving device
11/28/2012CN202560526U Double-acting layering oil well pump
11/28/2012CN202560525U Variable displacement fracturing and swabbing combined pump
11/28/2012CN101886535B Mule-head manual displacement device of pumping unit
11/27/2012CA2515134C Plunger with annular exterior seals and method of installing annular seals on an exterior surface of a plunger
11/21/2012CN202545210U Shutdown safety protective device and anti-reversion mechanism mating with same for use
11/21/2012CN202545204U Novel injection-production pump for oil production at oil field
11/21/2012CN202545203U Downhole hydraulic oil well pump
11/21/2012CN202545202U Downhole tool for vortex liquid discharge and gas collection in low-yield natural gas well
11/21/2012CN101806201B Self balance energy storage oil extractor
11/17/2012CA2740567A1 Downhole pump apparatus having decoupleable isolation plug
11/15/2012WO2012088197A3 Water pump and methods of use thereof
11/14/2012CN202531415U Phi 25-millimeter small displacement solid plunger piston oil-well pump
11/14/2012CN202531405U Concentric-pipe type pump for coal-bed methane
11/14/2012CN1648465B System and method for offshore production with well control
11/14/2012CN102777363A Intelligent reversing electric submersible rodless oil pumping device
11/08/2012WO2012151488A1 System and method for sensing a liquid level
11/08/2012US20120282116 Subsea pumping system
11/08/2012CA2835071A1 System and method for sensing a liquid level
11/07/2012CN202520526U Gas-proof oil well pump
11/07/2012CN102770086A Disposable pumping system and coupler
11/07/2012CN102155190B Pulley stroke beam type pumping unit
11/07/2012CN101624902B Anchor for coaxially bidirectionally anchoring oil pump
11/02/2012CA2769943A1 Electric cable, electric motor and electric submersible pump
11/01/2012CA2831521A1 Reverse rotation protection for borehole pumps
10/2012
10/31/2012EP2515777A1 Disposable pumping system and coupler
10/31/2012CN102758761A Chemical combination flooding scale-deposition antiscale oil well pump
10/26/2012CA2832199A1 Electrical submersible pump with reciprocating linear motor
10/25/2012CA2775225A1 Electric motor and electric submersible pump
10/24/2012CN202500752U Salvageable valve type oil well pump
10/24/2012CN202500751U Tertiary oil recovery oil well pump
10/18/2012WO2012141853A1 Double string slurry pump
10/18/2012WO2012102995A3 Pump attachment interface providing a fixed link between a pump line coupled to a mobile tank and a line disposed in a reservoir
10/18/2012CA2828735A1 Double string slurry pump
10/17/2012EP2510238A1 Pump system
10/17/2012CN102734142A Low-energy consumption hydraulic oil pump
10/17/2012CN102734141A Oil production long-suction method
10/17/2012CN101858333B Dual-working barrel oil-well pump capable of swabbing consecutively
10/10/2012CN202483526U Weight balancing auxiliary power energy-saving pumping unit
10/10/2012CN102720663A Special oil-well pump for multifunctional submersible linear motor
10/10/2012CN101624901B Anchoring device of screw pump
10/09/2012CA2508270C Wear rings for downhole pump
10/03/2012CN202468247U Self-compensation oil extraction pump
10/03/2012CN202468246U Novel oil submersible electric pump
10/03/2012CN202468245U Sand-proof oil well pump
10/03/2012CN202468244U Oil-free lubrication pressure regulating pump
10/03/2012CN202468243U Rotary-plunger scale-prevention oil-well pump
10/03/2012CN202467785U Oil pumping system
10/03/2012CN102713091A Deep-well pump system
09/2012
09/26/2012CN202451408U Plunger type selective mining and mixing pump
09/26/2012CN202451407U Gyro efficient oil well pump
09/26/2012CN202451406U Big-output thickened oil pump
09/26/2012CN101225738B Oil field down-hole rotary type mechanical transmission means
09/25/2012US8272856 High-pressure pump, in particular for a fuel injection apparatus of an internal combustion engine
09/19/2012CN202441567U Hydraulic oil pump for well
09/19/2012CN202441566U Hydraulic self-sealing plunger oil well pump with multi-stage pump barrels
09/19/2012CN202441565U Connection rod oil well pump
09/19/2012CN202441337U Double-decelerating and double-balancing energy saving oil pumper with positive torque
09/19/2012CN102678089A Mobile counterweight type pumping unit
09/18/2012CA2692651C Pressure equalizer in thrust chamber electrical submersible pump assembly having dual pressure barriers
09/15/2012CA2770926A1 Downhole backspin retarder for progressive cavity pump
09/12/2012CN202431492U Anti-leaking oil pump
09/12/2012CN202431257U Combined type energy-saving oil pumping machine
09/12/2012CN102661271A Rodless pump for single-core oil-submersible cable linear motor
09/12/2012CN102661270A Long-plunger-piston gas-locking-prevention respective pumping mixing oil well pump
09/11/2012US8262367 Fault-tolerant chemical injection system for oil and gas wells
09/11/2012CA2480237C Pumping method and system for oil wells
09/06/2012US20120222856 Coiled tubing deployed esp
09/06/2012DE102011013115A1 Förderanlage für Öl und Gas Conveying system for oil and gas
09/05/2012EP2494140A1 Permanent magnet direct drive mud pump
09/05/2012CN202417897U Integral infusion pump of high-lift driving reversing plunger piston
09/05/2012CN202417896U Novel oilfield underground sand-proof pump
09/05/2012CN202417895U Spinning centering sand-prevention oil-well pump
09/05/2012CN202417439U No-beam and energy-saving oil pumping machine
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