OIL-WELL SUCKER-ROD PUMP Russian patent published in 1999 - IPC

Abstract RU 2132968 C1

FIELD: oil producing industry; increase in production rate of oil wells with high gas-oil ratio. SUBSTANCE: oil-well sucker-rod pump has cylinder accommodating fixed plunger forming two chambers, namely, upper and lower ones, and ball valves. Cylinder is made stepped for axial displacement. Diameter of lower chamber is smaller than that of upper chamber. EFFECT: increased capacity of pump. 1 dwg

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RU 2 132 968 C1

Authors

Koshkin K.I.

Kljushin I.Ja.

Dates

1999-07-10—Published

1998-02-11—Filed