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2 161 687

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IPC

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Application

98119232/06, 1998-10-23

(24)

Start date

1998-10-23

(22)

Actual filing date

1998-10-23

(45)

Published

2001-01-10

(72)

Inventor

Grachev V.V.Dobrenkov A.N.Rudnitskij A.V.Ippolitov V.V.

(73)

Holder

OaoObshchestvo S Ogranichennoj Otvetstvennost'Ju Nauchno-Issledovatel'Skij Institut Prirodnykh Gazov I Gazovykh Tekhnologij

JOINT OF CASTING PIPES Russian patent published in 2001 - IPC

Abstract RU 2161687 C2

FIELD: oil-and-gas and petrochemical industries, particularly, equipment at oil and gas fields. SUBSTANCE: casing pipe joint consist of box, two converging threaded ends of pipes. Both ends of pipe are made in the form of mutually joining truncated cones whose vertexes form additional cavity for sealing material. Strength of sealing material is below and deformability is above strength and deformability of pipe material. EFFECT: higher air-tightness of threaded joints. 1 dwg

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RU 2 161 687 C2

Authors

Grachev V.V.

Dobrenkov A.N.

Rudnitskij A.V.

Ippolitov V.V.

Dates

2001-01-10—Published

1998-10-23—Filed

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