LONG-STROKE DEEP-WELL PUMPING UNIT Russian patent published in 1999 - IPC

Abstract RU 2125185 C1

FIELD: lifting oil from well bottom. SUBSTANCE: tractive member of pumping unit is made in form of chain set in reciprocating motion by means of sprocket located inside hermetic casing connecting the heads of both wells, thus making it possible to operate it by one drive. EFFECT: reduced power requirements and metal usage; enhanced durability of tractive member; improved ecological situation. 2 dwg

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RU 2 125 185 C1

Authors

Grib V.S.

Gustov B.M.

Vasil'Ev P.K.

Dates

1999-01-20—Published

1997-04-10—Filed