Apparatus and method

Details Apparatus and method Apparatus and method

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 47/00 (2006.01) E21B 43/00 (2006.01) F04B 47/04 (2006.01)

Patent

CA 2504278

The present invention includes methods and apparatuses to pump fluids from a well bore using a hydraulically actuated reciprocating pump to pump fluids from a well to the surface. In one embodiment the weight of the pumped fluid is utilised to return the piston in one direction and preferably the pressure within the well is utilised to urge the piston in the opposite direction thus reducing the amount of force required to reciprocate the piston and consequently reducing the amount of power required to operate the pump.

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