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2 211 910

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IPC

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Application

2001133218/03, 2001-12-06

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Start date

2001-12-06

(22)

Actual filing date

2001-12-06

(45)

Published

2003-09-10

(72)

Inventor

Abdrakhmanov G.S.Khamit'Janov N.Kh.Zajnullin A.G.Vil'Danov N.N.Filippov V.P.Kirshin A.V.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Im. V.D. Shashina

ADAPTER FOR JOINING OF PROFILE SHUTOFF DEVICE WITH DRILL PIPE STRING Russian patent published in 2003 - IPC

Abstract RU 2211910 C1

FIELD: well drilling and repairs, particularly, devices for joining of profile shutoff devices with drill pipe string in its lowering into well. SUBSTANCE: adapter has body with central channel, nipple and coupling ends with threads. Installed in central channel is retainer in form of bushing with side longitudinal recesses. Secured to bushing lower end is plate engageable with profile part of shutoff device. Bushing is fixed from rotary motions relative to body by means of body protrusions entering bushing longitudinal recesses. EFFECT: increased serviceability of adapter and its reliable joining with shutoff device. 2 dwg

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RU 2 211 910 C1

Authors

Abdrakhmanov G.S.

Khamit'Janov N.Kh.

Zajnullin A.G.

Vil'Danov N.N.

Filippov V.P.

Kirshin A.V.

Dates

2003-09-10—Published

2001-12-06—Filed