Oil well pump driving unit

Details Oil well pump driving unit Oil well pump driving unit

1980-09-03

1982-03-23

Leppink, James A.

Wells

With below and above ground modification

Eduction pump or plunger in well

166 84, F04B 4704

Patent

active

043207995

ABSTRACT:
An oil well pumping apparatus which includes a submerged reciprocating pump mounted in a tubing arrangement communicating with the well head, a sucker rod string extending through the tubing arrangement and connected in driving relation with the pump, and a pumping tee and stuffing box arrangement mounted on the casing of the well at the well head and including a sealed drive rod arrangement in the stuffing box connected in driving relation to said sucker rod string, and a pump driving unit. The pump driving unit includes a hydraulic cylinder and support means for supporting the hydraulic cylinder over the stuffing box with the axis of the cylinder rod aligned with the axis of said stuffing box. A coupling means is provided for coupling the cylinder rod to the seal drive rod arrangement. A hydraulic drive-control unit is coupled to said in-out fluid line for operating the hydraulic cylinder to produce an operating cycle consisting of a hydraulic power upstroke and a gravity power downstroke.

REFERENCES:
patent: 1017722 (1912-02-01), Wintz
patent: 1708584 (1929-04-01), Mason
patent: 1845176 (1932-02-01), Palm
patent: 2869469 (1959-01-01), Williams
patent: 2874641 (1959-02-01), McCandlish et al.
patent: 3212406 (1965-10-01), McDuffie

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