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2 098 665

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C1

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IPC

(21) (22)

Application

95117035/06, 1995-10-06

(22)

Actual filing date

1995-10-06

(45)

Published

1997-12-10

(72)

Inventor

Rjuseh V.P.Tikhomirov B.V.Poretskij A.B.Korabel'Nikov M.I.Temnov G.N.

(73)

Holder

Aktsionernoe Obshchestvo Zakrytogo TipaAktsionernoe Obshchestvo

OIL-WELL PUMPING UNIT Russian patent published in 1997 - IPC

Abstract RU 2098665 C1

FIELD: oil recovery technique; shutting-off well for conducting repair jobs. SUBSTANCE: oil-well pump is provided with cylinder, plunger, suction and delivery valves and subsurface safety valve secured in oil well tubing. Subsurface safety valve is made in form of ball valve whose ball 1 is engageable with spring-loaded rod held by ball. Cylinder of oil-well pump is provided with end-piece which is passed through hole of valve seat and is engageable with ball. EFFECT: reliability. 3 dwg

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RU 2 098 665 C1

Authors

Rjuseh V.P.

Tikhomirov B.V.

Poretskij A.B.

Korabel'Nikov M.I.

Temnov G.N.

Dates

1997-12-10—Published

1995-10-06—Filed

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