Regenerative hydraulic power transmission for down-hole pump

Details Regenerative hydraulic power transmission for down-hole pump Regenerative hydraulic power transmission for down-hole pump

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 47/04 (2006.01) E21B 47/00 (2006.01) F03G 3/08 (2006.01) F04B 9/10 (2006.01) F04B 49/00 (2006.01)

Patent

CA 2192154

Regenerative hydraulic power transmission for subsurface pumps, including a power source, a variable flow rate hydraulic pump, means to reverse flow through the hydraulic pump responsive to change in direction of the subsurface pump stroke, and an inertial assist for the power source which gathers energy from the downstroke of the subsurface pump and utilizes the gathered energy to power the upstroke of the subsurface pump. The transmission can vary upstroke speed apart from downstroke speed, pump stroke length and dwell time of change in stroke direction.

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