Hydraulic pump driving unit for oil wells

Details Hydraulic pump driving unit for oil wells Hydraulic pump driving unit for oil wells

1983-07-25

1984-12-25

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

166 685, F04B 4704

Patent

active

044900970

ABSTRACT:
An oil well pump driving unit which includes a hydraulic cylinder mounting arrangement which eliminates the use of a stuffing box by mounting the cylinder by way of a mounting arrangement on top of a pumping tee at the wellhead which includes a cylinder rod sealing arrangement separate from the one in the hydraulic cylinder to preclude leakage of well fluid around the cylinder rod.

REFERENCES:
patent: 805267 (1905-11-01), Davis
patent: 1312442 (1919-08-01), Greenlee
patent: 1627945 (1927-05-01), Wigle
patent: 2287709 (1942-06-01), Ringman
patent: 2367248 (1945-01-01), Vickers et al.
patent: 2699154 (1955-01-01), Smith
patent: 2869469 (1959-01-01), Williams
patent: 4305461 (1981-12-01), Meyer
patent: 4320799 (1982-03-01), Gilbertson

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