Down hole hydraulically actuated pump

Details Down hole hydraulically actuated pump Down hole hydraulically actuated pump

F - Mech Eng,Light,Heat,Weapons

04

B

103/39

F04B 47/08 (2006.01)

Patent

CA 1316046

ABSTRACT A sub-surface hydraulically operated engine for reciprocating an oilwell pumping unit includes confined hydraulic fluid means for actuating a reversing valve and its lifter in order to change the upstroke motion to downstroke motion and vice-versa.

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