OIL-WELL ELECTRICAL CENTRIFUGAL PUMP UNIT Russian patent published in 2002 - IPC

Abstract RU 2187624 C2

FIELD: equipment for operation of oil wells, particularly, device for oil recovery by electrical centrifugal pumps. SUBSTANCE: unit has pump with electric motor, check and drain valves. Check valve has damper with channels and cylinder. Cylinder piston is connected with check valve plate. Cylinder is communicated with damper. Piston acts on fluid when it is moved in cylinder at speed proportional to velocity of fluid efflux from damper channels. EFFECT: increased efficiency of well operation. 1 dwg

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RU 2 187 624 C2

Authors

Kaplan L.S.

Gabdrakhmanov N.Kh.

Mingulov Sh.G.

Usov A.I.

Kaplan A.L.

Dates

2002-08-20—Published

2000-03-31—Filed