Oil well pump driving unit

Details Oil well pump driving unit Oil well pump driving unit

1982-06-21

1984-02-21

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

91220, 91248, 91275, 91450, F04B 4704

Patent

active

044327064

ABSTRACT:
An oil well pump driving unit with a horizontally disposed hydraulic cylinder having a cylinder rod coupled to a drive rope extending into a pumping tee-stuffing box arrangement for driving the sucker rod string leading to a conventional oil well reciprocating pump. The drive rope extends over a first rotating sheave mounted near the wellhead and passes over a second rotating sheave mounted on a carriage which traverses a carriage channel in a draw works on which the hydraulic cylinder is mounted. A hydraulic drive/control system utilizing limit switches on the draw works provides control over the stroke position, the stroke length, and the stroke rate.

REFERENCES:
patent: 2072595 (1937-02-01), Hutchinson
patent: 2282977 (1942-05-01), Mast
patent: 2665550 (1954-01-01), Harvey
patent: 2934899 (1960-05-01), Koplin et al.
patent: 3635020 (1972-01-01), Mahlmann
patent: 4136519 (1979-01-01), Field et al.
patent: 4167098 (1979-09-01), James
patent: 4191016 (1980-03-01), Roth et al.
patent: 4198820 (1980-04-01), Roth et al.

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