Double-ended hydraulically actuated down-hole pump

Details Double-ended hydraulically actuated down-hole pump Double-ended hydraulically actuated down-hole pump

1974-10-29

1976-05-18

Husar, C. J.

Pumps

Motor driven

Fluid motor

F04B 1700

Patent

active

039574008

ABSTRACT:
A downhole fluid actuated pump assembly for use in a borehole. Power fluid flows downhole to an engine which actuates a pump, and the pump lifts production fluid to the surface of the earth, with the spent power fluid from the pump assembly being co-mingled with the production fluid.
The pump assembly has cylinders spaced from one another by a valve assembly with each of the cylinders being divided into upper and lower chambers by a piston, with one side of each piston being used as the engine while the remaining side of each piston is used for pumping formation fluid.
A common connecting rod connects together the pistons and the valve assembly. The interior of the rod is hollow and forms a flow passageway for flow of power fluid to the valve assembly and to a balance tube.

REFERENCES:
patent: 2503986 (1950-04-01), Alley
patent: 2991721 (1961-07-01), Foster
patent: 3212445 (1965-10-01), Coberly

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