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2 161 696

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C2

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IPC

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Application

98111717/03, 1998-06-17

(24)

Start date

1998-06-17

(22)

Actual filing date

1998-06-17

(45)

Published

2001-01-10

(72)

Inventor

Safin V.A.Takhautdinov Sh.F.Farkhutdinov R.G.Ermakov O.N.Novikov G.V.

(73)

Holder

Safin Velir Akhatovich

STRAINER OF OIL-WELL SUCKER-ROD PUMP Russian patent published in 2001 - IPC

Abstract RU 2161696 C2

FIELD: oil-producing industry; protection of pumps from stopping with particles contained in fluid. SUBSTANCE: device has perforated receiving tube embraced bottom by branch pipe. The latter has friction shoe for its fixation in well casing string and possible motion of receiving tube upward during pump sucking. During discharge the tube moves downward. During suction and displacement, well fluid flows through holes of receiving tube. EFFECT: higher operating reliability of strainer due to generation of periodic pulses through filter members in reverse direction. 2 cl, 1 dwg

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RU 2 161 696 C2

Authors

Safin V.A.

Takhautdinov Sh.F.

Farkhutdinov R.G.

Ermakov O.N.

Novikov G.V.

Dates

2001-01-10—Published

1998-06-17—Filed

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