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2 162 137

(13)

(51)

IPC

(21) (22)

Application

99108525/03, 1999-04-26

(24)

Start date

1999-04-26

(22)

Actual filing date

1999-04-26

(45)

Published

2001-01-20

(72)

Inventor

Jusupov I.G.Zherebtsov E.P.Gabdullin R.G.Strakhov D.V.Osnos V.B.Asadullin M.F.

(73)

Holder

Otkrytoe Aktsionernoe ObshchestvoTatarskij Nauchno-Issledovatel'Skij I Proektnyj Institut Nefti

PACKER Russian patent published in 2001 - IPC

Abstract RU 2162137 C2

FIELD: oil-producing industry, particularly, means for protection of casing string from high pressure. SUBSTANCE: packer includes branch pipe carrying on its external surface seal in the form of flexible shell and expanding of cone connected with drive through tie-rod. Expanding cone is comprised of cylinder and expanding member concentrically accommodated in it. They are interconnected by disconnecting member for freeing of expending member from cylinder and lowering of tubing whose lower end carries installed plunger with sealing members for engagement with internal wall of expanding member whose internal diameter is selected to correspond to plunger external diameter. EFFECT: simplified design, higher reliability and reduced metal specific quantity, reduced force in packer installation. 2 dwg

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RU 2 162 137 C2

Authors

Jusupov I.G.

Zherebtsov E.P.

Gabdullin R.G.

Strakhov D.V.

Osnos V.B.

Asadullin M.F.

Dates

2001-01-20—Published

1999-04-26—Filed