WELL HYDROPUMP UNIT Russian patent published in 1998 - IPC

Abstract RU 2107188 C1

FIELD: operations in wells; sucker rod and hydropiston pumps. SUBSTANCE: unit includes submersible device mounted in tubing. It includes two cylinders of different diameters and two plungers connected by means of hollow rod and mounted in cylinders forming above-plunger space in cavity of tubing. Above-plunger space is isolated from circular space between tubing and casing string. Weight connected to plungers is used for equalizing the hydrostatic pressure in tubing with that in circular space. Unit is provided with hydraulic drive in the form of power pump connected to circular space. EFFECT: enhanced reliability. 1 dwg

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RU 2 107 188 C1

Authors

Auzbaev D.

Takhautdinov Sh.F.

Muslimov R.Kh.

Jusupov I.G.

Dates

1998-03-20—Published

1993-01-11—Filed