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2 171 358

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IPC

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Application

99120935/03, 1999-10-04

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Start date

1999-10-04

(22)

Actual filing date

1999-10-04

(45)

Published

2001-07-27

(72)

Inventor

Chasovskikh A.I.Bondar' A.V.Sashenko V.V.Rylov E.N.Filippov A.G.Kunavin V.V.Medvedev I.V.Balashov V.A.Zajtseva L.A.

(73)

Holder

Federal'Noe Gosudarstvennoe Unitarnoe Predprijatie Mekhanicheskij Zavod"

TUBING HANGER OF WELLHEAD EQUIPMENT WITH METAL- TO-METAL SEAL Russian patent published in 2001 - IPC

Abstract RU 2171358 C2

FIELD: oil and gas producing industry, particularly, wellhead equipment. SUBSTANCE: tubing hanger is installed in tubing head connected with adapting flange and consists of hanger body and seals. Lower seal of casing string-borehole annulus consists of locking and supporting rings and metal collar installed on step of supporting ring and having internal conical surface and external cylindrical surface whose upper part has, at least, two projection with tore working surface. EFFECT: reduced cost of starting and adjustment operations due to multiple use of seal of casing-borehole annulus. 2 cl, 3 dwg

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RU 2 171 358 C2

Authors

Chasovskikh A.I.

Bondar' A.V.

Sashenko V.V.

Rylov E.N.

Filippov A.G.

Kunavin V.V.

Medvedev I.V.

Balashov V.A.

Zajtseva L.A.

Dates

2001-07-27—Published

1999-10-04—Filed