Well pump

Details Well pump Well pump

1986-06-27

1988-04-19

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

417468, F04B 4708

Patent

active

047385995

ABSTRACT:
A well pump, for pumping well fluid up a tubing string, the pump having inner and outer housings, inner and outer barrels, and upper and lower valves. A hydraulic fluid line extends downward through the casing, outside of the tubing string, from the surface to the housing, below the outer barrel and outside the inner barrel, to cause the outer barrel to move up and down. A wireline tool an be used to install and to remove the inner and outer barrels from the well pump.

REFERENCES:
patent: 1777981 (1930-10-01), Mason
patent: 2260127 (1941-10-01), Tebbetts, Jr.
patent: 2266094 (1941-12-01), Tebbetts, Jr.
patent: 2975768 (1961-03-01), Marquis
patent: 3102495 (1963-09-01), Page
patent: 3282340 (1966-11-01), Park
patent: 3494418 (1970-02-01), Young
patent: 3495659 (1970-02-01), McGill
patent: 4403919 (1983-09-01), Stanton et al.
patent: 4490095 (1984-12-01), Soderberg
patent: 4595054 (1986-06-01), Schroeder

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