DEVICE FOR LIFTING LIQUID FROM WELL Russian patent published in 2000 - IPC

Abstract RU 2150576 C1

FIELD: oil producing industry; completion and operation of wells. SUBSTANCE: device includes bailer connected with tractive member. It is passed to well through stuffing box of wellhead equipment. Piston is located under it. Tractive member runs through piston. Piston is provided with additional passage with valve. Device provides for passage of piston into bailer and forming the liquid out of it. Liquid is forced-out through central cavity or through additional cavity of piston when bailer approaches wellhead. EFFECT: increased productivity. 4 cl, 4 dwg

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RU 2 150 576 C1

Authors

Valovskij V.M.

Akhunov R.M.

Man'Ko M.I.

Osipova L.V.

Dates

2000-06-10—Published

1998-06-10—Filed