Method for pumping a liquid from a well and apparatus for use th

Details Method for pumping a liquid from a well and apparatus for use th Method for pumping a liquid from a well and apparatus for use th

1982-08-11

1984-06-26

Novosad, Stephen J.

Wells

With below and above ground modification

Eduction pump or plunger in well

166 96, 248650, E21B 4300

Patent

active

044560605

ABSTRACT:
A pumping method, principally for oil, allows the sucker rod to fall under gravity for the first part of the downward stroke, then decelerates the sucker rod to a slow rate of descent, so creating a pause in the sucker rod's motion. Shock-absorbing means are provided to eliminate the impulsive loadings imposed upon the sucker rod at either extremity of its motion in conventional pumping methods. Hydraulically and mechanically-driven apparatus is disclosed for carrying out the method.

REFERENCES:
patent: 1046127 (1912-12-01), Weatherwax
patent: 3212406 (1965-11-01), McDuffie
patent: 3546918 (1970-12-01), Trainer
patent: 4244547 (1981-01-01), Kooi

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