Oilwell pump system and method

Details Oilwell pump system and method Oilwell pump system and method

1982-07-26

1985-09-10

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

417392, F04B 4708

Patent

active

045403481

ABSTRACT:
A well pump having a power fluid that is to be reciprocated in a conduit so as to power a downhole pump by filling the downhole pump and the lower portion of the power conduit with a hydraulic oil having a specific gravity greater than water and filling the rest of the power conduit with a less compressible fluid such as water.

REFERENCES:
patent: 376382 (1888-01-01), Hearn
patent: 2744469 (1956-05-01), Schaefer
patent: 3080820 (1963-03-01), Browne
patent: 3123007 (1964-03-01), Orr
patent: 3494290 (1970-02-01), Schaible
patent: 3802802 (1974-04-01), Greer
patent: 4120612 (1978-10-01), Brown
patent: 4297088 (1981-10-01), Akkerman

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