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Matches 351 - 400 out of 862

Document Document Title
WO/2009/090479A4
The present invention provides a water lubricated line shaft bearing assembly, compπsing an outer annular steel shell and an inner layer made of low function material attached to the outer shell, the inner layer having a non-uniform thi...  
WO/2010/021602A2
The pumping equipment that is subject to industrial property right comprising a structure of components caulked in places of connection, which together constitute a pumping mechanism (1) enabling for a through-flow of fluid and consistin...  
WO/2009/146713A8
The present invention describes a pumping device (1) for pumping fluids. The pumping device (1) comprises a force transmitting element (2), a tension unit (3) coupled to the force transmitting element (2) and a seal element (10). The for...  
WO/2010/018355A2
A positive displacement wellbore servicing pump having a power end and a fluid end is disclosed. The fluid end has a main chamber and a suction bore in fluid connection with the main chamber and the suction bore has a suction central axi...  
WO/2009/090479A3
The present invention provides a water lubricated line shaft bearing assembly, compπsing an outer annular steel shell and an inner layer made of low function material attached to the outer shell, the inner layer having a non-uniform thi...  
WO/2009/156500A1
The invention relates to a piston pump (10), particularly a rinsing pump for use when rinsing well drill holes, comprising at least one driving motor (26) having high torque, wherein the driving motor (26) is disposed substantially on an...  
WO/2009/152652A1
A dual-plunger self-rotatable oil well pump comprises a plunger and two layers of pump barrel (16, 19) around the plunger. The plunger includes at least two plunger bodies (13), the two adjacent plunger bodies (13) are screwed together t...  
WO/2009/146713A1
The present invention describes a pumping device (1) for pumping fluids. The pumping device (1) comprises a force transmitting element (2), a tension unit (3) coupled to the force transmitting element (2) and a seal element (10). The for...  
WO/2009/097338A3
A hydraulic oil well pumping apparatus, preferably includes a hydraulic cylinder having a rod that is movable between a upper and lower rod positions; a pumping string that extends downwardly from the rod, the string being configured to ...  
WO/2009/046108A3
An oil well pumping apparatus for pumping oil from a well to a wellhead provides a tool body that is sized and shaped to be lowered into the production tubing string of the oil well. A working fluid is provided that can be pumped into th...  
WO/2009/111970A1
A hydraulic cylinder, an oil pumping unit, an oil pumping module and an oil pumping system, the hydraulic cylinder has a hydraulic cylinder body(330), a piston(331), and a first piston rod(333), a second piston rod(332); the two piston r...  
WO/2009/103155A1
This invention discloses a method of constructing an artificial lift device for deep wells, in which the deadload of the pump mechanism is supported by a continuously-controlled gas spring. The reciprocating motion is produced by a linea...  
WO/2009/096804A1
An oil filter for use in an electric motor forming part of a downhole device such as an ESP, comprising a two-part filter including a first part formed from a porous material which acts to filter solid particulate material from the motor...  
WO/2009/097338A2
A hydraulic oil well pumping apparatus, preferably includes a hydraulic cylinder having a rod that is movable between a upper and lower rod positions; a pumping string that extends downwardly from the rod, the string being configured to ...  
WO/2009/092189A1
An external valve type hydraulic self-sealing piston oil well pump has a traveling valve (2), a piston (3), a pump barrel (5) and a fixed valve (6), the fixed valve (6) is fixed on a lower part of the pump barrel (5), and the traveling v...  
WO/2009/070853A1
A pumping apparatus having a housing and a passageway mounted to the housing. The pumping apparatus also has a free member which is movable within the passageway. Rotation of the housing causes the free member to move within the passagew...  
WO/2009/070876A1
A mud pump is provided that includes a frame and a motor mounted on the frame to rotate an eccentric shaft having substantially circular eccentric lobes. Each lobe is rotatably mounted in a slide. Each slide is slidably mounted in a slid...  
WO/2009/064310A1
Disclosed is an apparatus comprising a hydraulic cylinder assembly, a load connected to the cylinder, a reversible hydraulic pump assembly, a pressurized supply of hydraulic fluid, first and second conduits for hydraulic fluid, and a con...  
WO/2009/049420A1
A tubing member for use in well operations comprises a solid core extruded casing surrounding a production tubing passage arranged to receive produced fluids from a well therethrough and one or more auxiliary conduits arranged for commun...  
WO/2009/052175A1
An improved apparatus and method are provided, for pumping fluids, such as water and/or hydrocarbons, from a subterranean formation or reservoir, through use of a cranked rod pumping (CRP) apparatus for imparting reciprocating substantia...  
WO/2009/024769A3
Methods and systems for improving the efficiency of a pumping process by controlling the operation of the pumps involved based on certain parameters characterizing the pump. A pump unit is coupled to a pump controller which is in turn, c...  
WO/2009/046108A2
An oil well pumping apparatus for pumping oil from a well to a wellhead provides a tool body that is sized and shaped to be lowered into the production tubing string of the oil well. A working fluid is provided that can be pumped into th...  
WO/2009/039602A1
The invention relates to electric linear motors and gas springs in reciprocating pumps for oil wells. By the use of this invention a simple, silent, compact and adaptable mechanism can be constructed to drive a wide range of such pumps. ...  
WO/2009/024769A2
Methods and systems for improving the efficiency of a pumping process by controlling the operation of the pumps involved based on certain parameters characterizing the pump. A pump unit is coupled to a pump controller which is in turn, c...  
WO/2009/017021A1
Disclosed is a deep sea water lift-up device, which can be easily constructed and maintained. An intake portion (1) arranged in a deep portion of an ocean and a release portion (2) arranged in a surface portion of the ocean are connected...  
WO/2007/082024A3
A sensor assembly (51) for sensing one or more fluid properties of a fluid in a subsurface well (12) having a well fluid level (42W), a surface region (32) and a riser pipe (30) includes a sensor apparatus (52) and a pump assembly (54) t...  
WO/2008/148297A1
A hydraulic oil pump using the oil provided by the ground pump station as the power liquid realizes automatic reversion under the well. The pump includes an upper joint(1), a pump housing(2), a reversing valve(3), a control mechanism(4),...  
WO/2008/131610A1
A pumping unit without gear driving comprises a main frame(7,301), a carrier(17,308), a motor(8,310), a pumping rod(13,304), a mule-head hanger(14,321), a balance weight(4,314), a driving shaft(18,330), driving lines(16,318), a driving w...  
WO/2007/140436A3
A submersible pumping system comprises a piston that is axially moveable relative to a body between an extended position and a retracted position. A pump valve coupled to the body has a first position, where the pump valve supplies opera...  
WO/2008/092266A1
A pump (100) is provided comprising an internal power fluid column (140) and a transfer piston (120), which is reciprocatingly mounted about the power fluid column (140). The transfer piston (120) defines a product fluid chamber (130), l...  
WO/2008/085081A1
The inventive pumping unit comprises a submersible electric motor (1), an axial piston oil pump (4), an oil cubical expansion compensator, a screw pump (14) and a hydraulic gerotor engine (10). The ratio between the oil pump (4) volume d...  
WO/2008/083522A1
A rod pump used for eliminating eccentric rod wear and providing forward well-flushing comprises a connecting-tripping mechanism(25), a pump rod(26), a long pump plunger(27), a short pump barrel(28), a standing valve(29), a standing valv...  
WO/2008/018040A3
A monitor for a pump. The monitor includes a regulation mechanism to monitor input power delivered to the pump. An estimated output power is compared to the input power over a period of time by a data processor of the monitor. In this ma...  
WO/2008/077316A1
A beam pumping unit with a suspended-weight balance mechanism comprises a frame (2), a bracket (12), a suspended-weight balance pulley block (13, 14), a wireline (15), a beam (4) and a driving mechanism. The beam and the driving mechanis...  
WO/2008/071089A1
A traction drive double-oilwell pumping unit comprises a frame (16) and transmission mechanisms mounted on the frame. The transmission mechanisms comprise a smaller traction driving wheel (11), a wire line (12) winded on the smaller trac...  
WO/2008/058463A1
An annular gear rack pumping unit comprises a base plate (1), a framework (27) mounted on the base plate (1) and hoisting drums (23) arranged on the top of the framework (27). The intermediate section of the framework (27) is connected t...  
WO/2008/052381A1
A wheel type pumping unit comprises a frame (14), upper drive wheels (1,2) and a lower drive wheel (6) mounted on the frame, a polished rod (12), a balance weight (16) and a hoisting unit. The upper drive wheels comprise an inner wheel (...  
WO/2008/050095A1
A method of removing liquid from a gas well having a production tubing with a restriction therein run into the upper portion thereof and wherein a plunger lift system in arranged within the production tubing, the plunger lift system comp...  
WO/2008/005088A3
A pump jack system for reciprocating a pump rod string is made up of a base frame and piston drive cylinders mounted on the base frame with the upper end of the pump rod connected to the cylinder assemblies, the cylinder assemblies being...  
WO/2008/017211A1
A surface motor direct-drive sucker-rod screw pump device is driven by a vertical three-phase permanent magnet brush-less DC motor, and comprises a motor controller (6), a rectifying circuit, an inversion circuit, a CPU and a driving cir...  
WO/2008/017194A1
A rotating wheel and variable moment pumping unit driven by motor comprises a basement (1) , a frame (13), a sucker rod (3) and a counterweight (9), a rod wheel (5) mounted a shaft on the top of the frame (13), a drive mechanism for driv...  
WO/2007/072385A3
A reciprocating pump system is utilized. The system facilitates the prediction of failure modes due to degradation of pump components. A sensor system is used to monitor parameters indicative of abnormal events or wear occurring in speci...  
WO/2007/104186A1
A suspensory electrical submersible screw pumping system has oil lifting system and an electric system. The oil lifting system includes an upper connector, a protector, a fluid guiding sleeve, a driving mechanism, a shaft coupling, four ...  
WO2007041823A8
A method and system for pumping unit with an elastic rod system is applied to maximize fluid production. The maximum stroke of the pump and the shortest cycle time are calculated based on all static and dynamic properties of downhole and...  
WO/2007/099651A1
A water intake unit (1), which is located in the deep layer area of the sea, and a water discharge unit (3), which is located in the surface layer area of the sea, are fixed to the sea bottom. The water intake unit (1) is in the shape of...  
WO/2007/073633A1
An improved jet well pump includes a centrifugal pump assembly that is a punching and welding one and a jet pump assembly. The centrifugal pump assembly includes a pump body and a pump cover, an impeller and a shaft that are disposed in ...  
WO/2007/072385A2
A reciprocating pump system is utilized. The system facilitates the prediction of failure modes due to degradation of pump components. A sensor system is used to monitor parameters indicative of abnormal events or wear occurring in speci...  
WO/2007/041823A1
A method and system for pumping unit with an elastic rod system is applied to maximize fluid production. The maximum stroke of the pump and the shortest cycle time are calculated based on all static and dynamic properties of downhole and...  
WO/2007/040421A1
The invention relates to a downhole electric driven pump unit for oil production. Said unit comprises a submersible electric motor (1), a driven oil pump (2), a working plunger pump (4), an oil tank (7) provided with a secondary oil filt...  
WO2007008183A8
The invention relates to the oil-and-gas industry. The inventive hollow rod of a rod string for a deep-seated sucker rod pump plant comprises a tubular body and heads. Each head is embodied in a solid manner and is sealingly fixed to the...  

Matches 351 - 400 out of 862