OIL-WELL SUCKER-ROD PUMP Russian patent published in 2000 - IPC

Abstract RU 2161269 C2

FIELD: oil producing industry. SUBSTANCE: invention relates to mechanization of oil recovery and can be used in slanted wells. Outer surface of cylinder is provided with ring grooves located on cylinder lower in place of plunger travel. Grooves are made with rounding radius not less than cylinder wall thickness. EFFECT: improved efficiency and reliability in operation. 1 dwg

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RU 2 161 269 C2

Authors

Urazakov K.R.

Alekseev Ju.V.

Gabdrakhmanov N.Kh.

Ramazanov G.S.

Gil'Manova N.V.

Dates

2000-12-27—Published

1999-03-11—Filed