Lineal multi-cylinder hydraulic pumping unit for wells

Pumps – Motor driven – Fluid motor

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Details

60372, 91167R, F04B 4704, F04B 4714

Patent

active

043927920

ABSTRACT:
The present invention provides a hydraulic pumping unit, which is capable of pumping oil and other fluids from the downhole of a well. The pumping unit includes a frame and multi-cylinder system which is attached to the frame in such a manner that it is gravity centered. The bottom of the multi-cylinder system can be attached to the rod system of a well, and when the multi-cylinder system is expanded and contracted, the rod system and moving portion of the downhole pump of the well will be reciprocated back and forth, to bring (pump) oil or other fluid to the surface of the earth.
Many other features and facets of the pumping unit are also disclosed.

REFERENCES:
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patent: 2530673 (1950-11-01), Zinszer
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patent: 2614536 (1952-10-01), Livers
patent: 2665551 (1954-01-01), Chenault
patent: 2837029 (1958-06-01), Mohnkern
patent: 2874641 (1959-02-01), McCandlish et al.
patent: 2969042 (1961-01-01), Litz et al.
patent: 3072146 (1963-01-01), Gizeski
patent: 3540814 (1970-11-01), Roeder
patent: 3582238 (1971-06-01), Devine
patent: 3913457 (1975-10-01), Hawley

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