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2 226 601

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IPC

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Application

2001125187/03, 2001-09-13

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Start date

2001-09-13

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Actual filing date

2001-09-13

(45)

Published

2004-04-10

(72)

Inventor

Gabdullin R.G.Strakhov D.V.Makhmutov I.Kh.Ishkaev R.K.Fajzullin R.N.Khaminov N.I.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Im. V.D. Shashina

DEVICE FOR CEMENTATION OF ADDITIONAL CASING STRING Russian patent published in 2004 - IPC

Abstract RU 2226601 C2

FIELD: oil and gas extracting industry. SUBSTANCE: device has body, packer, covering bushing and packing members. Body is made with lower fixed stop and upper moveable stop. Upper moveable stop is made with inner cylindrical recess. Covering bushing is connected to the body by shear elements. Lower part of upper moveable stop is made in form of a wedge. Body has inner cylindrical recess. Upper row of radial passages is made in it. Above upper row of radial passages covering bushing is mounted. Device is provided with support and mounting bushings. Support bushing is connected to covering bushing. Mounting bushing is connected to the body by shear elements. Inner diameter of bushings is selected to fit outer nipple diameter. Nipple is made with ring conical projection, radial passages and packing members. Nipple is mounted on lower end of tubing string for interaction with inner wall of support and mounting bushings. EFFECT: simplified cementation technology. 1 dwg

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RU 2 226 601 C2

Authors

Gabdullin R.G.

Strakhov D.V.

Makhmutov I.Kh.

Ishkaev R.K.

Fajzullin R.N.

Khaminov N.I.

Dates

2004-04-10—Published

2001-09-13—Filed

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