Double acting engine and pump

Details Double acting engine and pump Double acting engine and pump

1982-09-13

1984-10-16

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

417563, 417571, F04B 4708

Patent

active

044772343

ABSTRACT:
A double acting hydraulically actuated pump and engine valve assembly for use downhole in a borehole for producing fossil fuel therefrom. High pressure hydraulic power fluid is forced downhole to a special control valve means located between opposed engine pistons. The valve means causes the power fluid to apply an alternating force to confronting faces of the pistons, while the opposed faces of the spaced apart pistons serve to pump and force production fluid to flow from a production zone, upward to the surface. The pump assembly can be used in combination with existing bottom hole assemblies, fixed or free type, already installed downhole in the wellbore.

REFERENCES:
patent: 2046834 (1936-07-01), Murphy
patent: 2799225 (1957-07-01), Schoen
patent: 2948224 (1960-08-01), Bailey et al.
patent: 3849030 (1974-11-01), McArthur et al.

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