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)
11/2005
11/02/2005CN2737986Y Injection and extraction integrated oil-well pump
11/02/2005CN2737985Y Multi-electric pump parallel system
10/2005
10/30/2005CA2504278A1 Apparatus and method
10/27/2005US20050238496 Fluid level control system
10/27/2005US20050238495 Fluid level control system for progressive cavity pump
10/27/2005US20050236156 Pumping from two levels of a pool of production fluid, and one way valve therefore
10/26/2005CN2736557Y Rodless driving mechanism for reciprocating oil well pump
10/26/2005CN2736556Y Horizontal oil well pump
10/20/2005US20050230120 Sand plunger
10/19/2005CN2735043Y Sand prevention hydraulic feedback oil well pump with an oil feed sand deposition passage
10/19/2005CN2735041Y Downhole linear motor driven crude oil lifting installation
10/19/2005CN2735040Y Downhole-driven lifting installation
10/19/2005CN2735039Y Multifunctional oil-well pump with a moving drum
10/19/2005CN2735038Y Long-plug ring seal hydraulic feedback oil well pump
10/19/2005CN2735037Y Large interval channel eccentric wear proof oil-well pump
10/19/2005CN1683791A Directly driving screw pump device
10/19/2005CN1683749A Adjustable variable moment type slide beam balance method for oil pumping unit
10/13/2005US20050226752 Apparatus and method for reducing gas lock in downhole pumps
10/13/2005US20050226751 Water pressure system with pressure tank installed within well casing of well
10/13/2005CA2503917A1 Apparatus and method for reducing gas lock in downhole pumps
10/12/2005CN1680716A Oil-sucking pump system without rigid cylinder and plunger
10/06/2005US20050220645 Submersible Pumping System and Method for Boosting Subsea Production Flow
10/05/2005CN2731140Y Energy saving device for oil pumping
10/05/2005CN2731138Y Belt tension device for oil pumping machine
10/05/2005CN2731137Y Slave tension device for driving-belt of oil pumping machine
10/05/2005CN2731135Y Hydraulic disc type brake device of screw screw pump
10/05/2005CN2731133Y High temperature resisting corrosion resisting oil pump
10/05/2005CN2731087Y Unloading buffer for oil pump
10/05/2005CN1221726C Pumping unit capable of regulating the position of sucker rod and horizontal or vertical position of relative to well
09/2005
09/29/2005US20050214143 Suction distribution and disconnection system for a submersible pump
09/29/2005US20050211432 Device for detecting water in product-only pump flow stream
09/28/2005CN1673534A Well dynamic direct-driven plunger oil-well pump
09/27/2005US6948917 Valving system for a downhole hydraulically actuated pump
09/21/2005CN2727450Y Integral tube type sand prevention oil-well pump
09/21/2005CN2727449Y Cam type mule head pin for pumping unit
09/21/2005CN2727448Y Motor regulator for pumping unit
09/21/2005CN2727447Y 抽稠油泵 Pumping heavy oil
09/20/2005US6945762 Mechanically actuated gas separator for downhole pump
09/15/2005WO2005059364B1 Reciprocating pump with screw actuator
09/14/2005CN2725575Y Portable brake linkage device
09/14/2005CN2725574Y Hydraulic oil extraction machine
09/14/2005CN2725573Y Hydraulic driven rodless pump device
09/14/2005CN2725572Y Belt type oil pumping machine belt joint
09/14/2005CN2725571Y Friction type intelligent oil pumping machine
09/14/2005CN2725570Y Deep pumping oil extraction pump
09/14/2005CN1667274A Rodless hydraulic oil pumping unit
09/14/2005CN1667273A Hollow oil-well pump
09/08/2005US20050194149 Thermal actuated plunger
09/07/2005CN2723734Y Deep well pneumatic oil production pump for oil field
09/07/2005CN1664368A Small displacement high lift reciprocating submersible electric pump
09/01/2005US20050188688 Hydraulic motor arrangement and method of operating a hydraulic motor
08/2005
08/31/2005CN2721910Y Drum oil sucker with long stroke
08/30/2005CA2282231C Modular downhole multiphase pump
08/24/2005CN2720156Y Hydraulic driven oil-production screw pump
08/24/2005CN2720155Y Tower-type oil pump
08/24/2005CN2720154Y Chain jointing device for oil pump
08/24/2005CN2720147Y Rod free oil-production system equipment
08/23/2005CA2415446C Wellhead hydraulic drive unit
08/18/2005US20050178543 Data logger plunger
08/17/2005CN2718263Y Oil drainage type pipe pump
08/17/2005CN2718257Y Inforced double-runner oil producing device by layer
08/11/2005WO2005073555A1 Hydraulic ram pump
08/11/2005US20050173157 Flow control valve
08/10/2005CN2716542Y Energy saving device for deep well pump
08/10/2005CN2716540Y Injection-production integrative oil well pump
08/10/2005CN1651764A Jet suction type extraction assisting pump
08/04/2005WO2005071264A1 Hydraulic motor arrangement and method of operating a hydraulic motor
08/04/2005US20050169776 Hydraulic gravity ram pump
08/04/2005CA2553320A1 Hydraulic motor arrangement and method of operating a hydraulic motor
07/2005
07/28/2005US20050163640 Rotary drivehead for downhole apparatus
07/28/2005US20050163633 Pump for pumping oil from deep wells
07/28/2005US20050161223 Flying valve and well production method
07/27/2005CN2713169Y Screw pump drive unit with blowout preventing pipe
07/26/2005US6922348 Water supply
07/21/2005WO2004074637A3 Sleeve piston fluid motor
07/20/2005CN2711410Y Dowble fixation valve pump for deep well
07/20/2005CN2711409Y Deep suction gas proof pipe type pump
07/20/2005CN2711407Y Sand-resisting type strong oil extracting pump with soft piston
07/20/2005CN2711386Y Oil sucker in deep well
07/14/2005US20050152791 Pumping assembly
07/14/2005US20050150224 Hydraulic oil well pumping installation
07/13/2005CN2709708Y Pump with integral gear pair
07/13/2005CN2709675Y Bottom valve assembly of throwing oil-well pump
07/06/2005CN2708002Y Forced deviation adjustment hydraulic feedback oil well pump
07/06/2005CN2708001Y Drum type pumping unit
07/06/2005CN1209557C Equalizing device for well pumping unit
06/2005
06/30/2005WO2005059364A1 Reciprocating pump with screw actuator
06/30/2005US20050142015 Hydraulic automatic boosting pump
06/30/2005US20050142005 Submersible well pump with improved diaphragm
06/29/2005CN2706630Y Planetary gear speed reducer for oil field thick oil pump
06/29/2005CN1632313A Oil submerged pump special-purpose speed reducer and process for making same
06/29/2005CN1632280A Temperature control umbrella type air support plunger
06/28/2005US6910532 Water pressure system with pressure tank installed within well casing of well
06/22/2005CN2705630Y Inner pump type sectioned float ball anti-sand oil pump
06/22/2005CN2705589Y Jetting and cutting united pump
06/16/2005US20050126791 Reciprocating slickline pump
06/15/2005CN2704702Y Oil-well pump for extracting oil
06/15/2005CN2704701Y Oil-well pump for extracting oil
06/15/2005CN2704699Y Piston water pumps
06/15/2005CN1626800A Intellectualized network system for oil pumping unit
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