High volume, double acting downhole pump

Details High volume, double acting downhole pump High volume, double acting downhole pump

1975-11-17

1978-03-21

Freeh, William L.

Pumps

Motor driven

Fluid motor

417396, F04B 1700, F04B 3500

Patent

active

040801110

ABSTRACT:
A downhole, hydraulically actuated, double acting pump of either the fixed or the free type, having a control valve positioned above the engine. The engine has a power cylinder chamber arranged at each extremity thereof, so that the connecting rod is placed in compression on each stroke of the engine.
The downhole pump includes spaced, external seals which form spaced, concentric, annular flow chambers therebetween, which cooperate with the various flow paths formed within the pump to enable a maximum size piston to be utilized within the apparatus. Hence, the power fluid and production fluid flow along unique flow paths, which are not formed within the side wall of the pump housing; and therefore, the apparatus accommodates a maximum diameter piston.

REFERENCES:
patent: 1880321 (1932-10-01), Jackson
patent: 2307566 (1943-01-01), Browne
patent: 2503986 (1950-04-01), Alley
patent: 2951445 (1960-09-01), Calvert
patent: 2966119 (1960-12-01), Boydston
patent: 3084630 (1963-04-01), Massey

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