Well pumping

Details Well pumping Well pumping

1991-03-01

1992-09-08

Bertsch, Richard A.

Pumps

Motor driven

Fluid motor

417401, 417403, F04B 908, F04B 1700

Patent

active

051453320

ABSTRACT:
Apparatus and method for pumping fluid from a wellbore using a reciprocating downhole pump, the downhole pump being reciprocated by a pumping unit which employs a hydraulic power cylinder means, the power cylinder being actuated with a variable displacement hydraulic pump.

REFERENCES:
patent: 4234294 (1980-11-01), Jensen
patent: 4347049 (1982-08-01), Anderson
patent: 4492536 (1985-01-01), Gilbertson
patent: 4515516 (1985-05-01), Perrine et al.
patent: 4616981 (1986-10-01), Simmons et al.
patent: 4761120 (1988-08-01), Mayer et al.
patent: 4768420 (1988-09-01), Korthaus
World Oil, May, 1989, What's New in Artificial Life, by J. F. Lea and H. W. Winkler, pp. 30 and 31.
Primer of Oil and Gas Production, American Petroleum Institute, Dallas, Tex., 1962, pp. 24 and 25.

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