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Patent Searching and Data


Matches 501 - 550 out of 819

Document Document Title
WO/1987/005974A1
A bladder pump (40) is suspended in a tubular air lift pump housing (14) which is closed at its lower end by a check valve (19), and which is connected at its upper end by a first conduit (25) and a separator (24) selectively to a supply...  
WO/1987/004498A1
A pump arrangement particularly intended for pumping water from deep wells, in which a feed pump unit (2) located at ground level transmits power and motion to a delivery pump unit (3), so that during a working stroke of the pump arrange...  
WO/1987/003935A1
A device for pumping a fluid medium comprising a casing (1), the cavity (4) in the upper part (2) of which is connected through selector valves (5, 9) to the atmosphere and to an inlet main (6), whereas in the lower part (3) of the casin...  
WO/1987/003649A1
A submersible well pump of the barrel (2) and piston (6) type characterised by a valve chamber (5) formed coextensively with the barrel (2) and containing an inlet valve (4) and an outlet valve (8) arranged to admit fluid to one end of t...  
WO/1987/002100A1
A displacement piston pump incorporating a driving pump (11), which via a conduit hydraulically drives a lifting pump (12) provided with a spring loaded differential piston (23). The pistons (15, 23) of the pumps are designed with throug...  
WO/1986/003262A1
A hydraulically powered reciprocating downhole pump having improved means for reliable and efficient operation in which a reversing valve (8) is hydraulically shifted past center position so as to effect a smooth continuous operation. In...  
WO/1986/003250A1
Method and means to pump a well with a hydraulically-driven downhole pump (15) as powered by a hydraulic surface unit (1), including a downhole filter assembly (71) and a flowline mounted oil leach (27) for supplying makeup oil to the su...  
WO/1986/002971A1
A downhole hydraulically operated oilwell pump (12) having means for mounting and methods for mounting and for operating that improve performance and extend useful life by negating sand effects and gas locking tendencies. A remotely and ...  
WO/1986/002412A1
A pumping apparatus (10) which includes a downhole reservoir unit (20), a pumping unit (18) and a power unit (102). The reservoir unit (20) has a piston assembly (70) with a top piston (72) and a bottom piston (74). A storage chamber (82...  
WO/1986/000962A1
A pump, particularly intended for use in pumping water from bore holes in the developing countries, comprises a cylindrical casing (2), the interior of which is divided into first and second chambers (12, 14) by a tubular flexible membra...  
WO/1986/000116A1
A bore hole pump which eliminates the need for a piston sealingly engaging with the walls of the pump body. The pump comprises a hollow body (11) closed at its lower end by a non-return inlet valve (13) and slidably and sealingly support...  
WO/1985/004691A1
The pump has a first pumping means (1) to be immersed into the liquid that is to be pumped, and a second means, driving pumping means (2), adapted to drive the first pumping means. The driving pumping means has a cylinder chamber (7) whi...  
WO/1984/001987A1
A pump jack for reciprocating a string of rods in a well in which a drive shaft (23) having an axis below the axis of a guide wheel (43) supported above the well has a crank arm (25) mounted to each end of the drive shaft (23) for rotati...  
WO/1984/001191A1
Methods and means wherein a downhole reciprocating oil well pump powered by a source of pressurized fluid via one tubing string (32) pumps liquid from the well through another tubing string (30). The downhole pump having internal means t...  
WO/1984/001002A1
A hydraulically actuated bore or well pump in which a driving unit (1) at the bore or well surface comprises interconnected pistons (6 and 7) arranged to hydraulically actuate a slave piston (27) in a submerged well or bore unit (2) thro...  
WO/1983/002805A1
Pump for liquids and gases, particularly for immersing in a well hole. A pump piston (35) is operated by a double acting operating piston (33) provided with working medium through a supply conduit (13). The supply of working medium to th...  
WO/1983/001817A1
A method, system, and apparatus for pumping liquid from a well such that vapor lock of the pump cannot occur due to gas or steam and such that the pump strokes only in response to the production rate of well liquid. The pumping chamber (...  
WO/1983/001658A1
An apparatus (3) for pumping fluid from a fluid source (5) to a predetermined location (7) remote from the fluid source. The apparatus (3) comprises an hydraulically operated pump (9) having a fluid pumping chamber and means for storing ...  
WO/1983/000203A1
A well pump includes a Sampson post (2) supporting a walking beam (1) which oscillates to cause a horsehead (3) to operate one or more sucker rods in a well bore. The invention avoids need for a flywheel, gearbox or other mechanical mean...  
WO/1982/000859A1
An oil well pumping apparatus which includes a submerged reciprocating pump (45) mounted in a tubing arrangement (40) communicating with the wellhead, a sucker rod string (67) extending through the tubing arrangement (40) and connected i...  
WO/1981/003206A1
An oil well pump driving unit with a horizontally disposed hydraulic cylinder (40) having a cylinder rod (41) coupled to a drive rope (31) extending into a pumping tee-stuffing box arrangement (30) for driving the sucker rod string (36) ...  
WO/1980/000173A1
A wind machine has a tower frame (12) formed by four converging beams. At the top of the tower is a gear head (26) connected to a wind driven rotatable multibladed rotor (48). Connected to the gear head is a vertical shaft (27) which is ...  
JP2018502240A
A method and an instrument which opt for manufacture of a downhaul pump. An exemplary method includes determining the 1st field of the 1st pump card in measuring the amount of fluids produced by pumping unit from an ore chute during a pr...  
JP2017523340A
A method and a device for determining a parameter of a pumping plant for use in a well are indicated. An exemplary device contains a processor arranged in a housing and a housing. A processor determines the 1st load in a polish rod of a ...  
JP2017514044A
By being related with the underwater motor pump protection pumping pipe for Fukai doors, the present invention can construct safely the pumping pipe installed in the Fukai door, and can pump it up now stably with an underwater motor pump...  
JP5824453B2  
JP2013504012A
[Means for Solution] When an electric motor of a pump jack may generate energy in the Kai loop mode, a system and a method of reducing energy consumed by a motor are provided by dropping service voltage to a motor. excepting energy gener...  
JP5022219B2  
JP2011032907A
To provide an effective and appropriate pumping device which can securely and efficiently perform pumping from a water area without the necessity of an intake pump and a pump pit therefor.A bubble emitting tube 13 with a bubble emitting ...  
JP4626057B2  
JP4614166B2  
JP4555832B2  
JP4475806B2  
JP2010101292A
To provide an effective and appropriate deep water intake installation, achieving stable operation without taking a higher safety factor with respect to a suction water head, and reasonable and economic design.In this deep water intake i...  
JP2010101291A
To provide a deep water intake installation and a method for operating the same, easily preventing adverse effect when a deep water pump is switched on/off.In this deep water intake installation pumping up and taking deep water from the ...  
JP4409672B2  
JP4299018B2  
JP4260979B2  
JP4172846B2  
JP3145049U
[Subject] A pump which is not easily got blocked as a long time line in pumping work which pumps up water in a well is provided. [Means for Solution] In a pump which allotted impellers 6 and 6 connected with shaft 5 interlocked with unde...  
JP4034133B2  
JP2007519849A
It is a pumping installation of the piston type constituted from a cylinder which has the top part and a bottom which has the 1st opening, and which was installed perpendicularly. It has the 1st and 2nd passages for the liquids in a cyli...  
JP2007517157A
The siphon pump which can unify power equipment and a siphon pump and can adjust a parameter on-line and which is used in a deep well, especially NC type reciprocation type underwater siphon pump, The stator in which all they are sunk in...  
JP3921241B2  
JP2007040117A
To provide a water intake facility capable of suppressing suction resistance and preventing occurrence of cavitation and lack of liquid while securing an appropriate pipe flow velocity to a degree in which piled mud does not occur.A seal...  
JP2006348814A
To solve the problem that a pump is required which can pump by itself after water is stored again even though pumping is temporarily interrupted because of a drought state when pumping from high depth having a small aperture with groundw...  
JP3884284B2
To provide a laying method for a deep layer water intake pipe capable of laying the pipe in the dry condition till the water intake depth, facilitating separation of a water stop lid, particularly at the water intake depth, and allowing ...  
JP2006316624A
To provide a method for pumping up by using buoyancy of liquid, attracting force, force of pumped-up liquid and added force, by forming a suction chamber and a pumping-up chamber, by attaching a partition, a hole and a valve to respectiv...  
JP3769722B2
To provide a method of laying a large tube in deep water at a reduced cost capable of making a tube easy to lay by adjusting the weight of the tube in deep water with filing fluid of lower density than that of sea water in the tube in de...  
JP3689906B2
To provide a deep water intake device capable of easily positioning a water intake inlet at a gathering place. A tube 5 is lowered into the sea from a hull 1, and deep water is gathered from the water intake inlet 8 at the tip of the tub...  

Matches 501 - 550 out of 819