Oil well pump

Details Oil well pump Oil well pump

1976-08-24

1978-04-04

Freeh, William L.

Pumps

Expansible chamber type

Valved piston

294 69R, 166162, E21B 2700, F04B 2104

Patent

active

040824837

ABSTRACT:
A novel oil well pump for reaching greater depths in wells than prior art structures having reduced down casing sizes wherein the pump comprises a plurality of individual hollow cylindrical chambers each operable in a given part of the pipe casing in conjunction with a pump plunger.

REFERENCES:
patent: 686951 (1901-11-01), Plotts
patent: 1875174 (1932-08-01), McGivern
patent: 2588521 (1952-03-01), Hanline et al.
patent: 2925866 (1960-02-01), Arterbury

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