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2 167 270

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C1

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IPC

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Application

99120543/03, 1999-09-29

(24)

Start date

1999-09-29

(22)

Actual filing date

1999-09-29

(45)

Published

2001-05-20

(72)

Inventor

Besprozvannyj A.V.Kudrin A.A.Tipugin A.V.Chebysheva A.V.Jurchenko A.I.

(73)

Holder

Ooo Oao

PLUNGER OF WELL LIFT Russian patent published in 2001 - IPC

Abstract RU 2167270 C1

FIELD: production of oil and gas. SUBSTANCE: plunger of well lift has rod carrying upper and lower guides with sealing members placed between them. Bushing is mounted for axial movement between upper and lower guides. Sealing members are put on bushing and spring-loaded which enables outer diameter of plunger to be changed. Upper guide is immobile relative to rod. Lower guide is mobile and can be fixed with reference to rod in upper position to provide change of compression of springs during relative travel of bushing and lower guide in process of operation of plunger. EFFECT: simplified design and enhanced functional qualities of plunger. 2 dwg

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RU 2 167 270 C1

Authors

Besprozvannyj A.V.

Kudrin A.A.

Tipugin A.V.

Chebysheva A.V.

Jurchenko A.I.

Dates

2001-05-20—Published

1999-09-29—Filed

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