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2 167 263

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C2

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IPC

(21) (22)

Application

99115321/03, 1999-07-12

(24)

Start date

1999-07-12

(22)

Actual filing date

1999-07-12

(45)

Published

2001-05-20

(72)

Inventor

Radionova S.V.Mavljutov M.R.Levinson L.M.Stepanov R.V.Kilin V.G.Khamidullin F.Kh.

(73)

Holder

Ufimskij Gosudarstvennyj Neftjanoj Tekhnicheskij Universitet

GEAR FOR ECCENTRIC POSITIONING OF DRILL PIPE STRING IN HOLE SHAFT FOR ROTOR DRILLING Russian patent published in 2001 - IPC

Abstract RU 2167263 C2

FIELD: drilling equipment, drilling of horizontal, vertical and inclined holes by rotor process. SUBSTANCE: proposed gear incorporates body housing internal and external dies which push forward from windows cut in body with rotation thanks to emergence of centrifugal forces. Dies have different radius of maximum permissible overhang during their rotation. EFFECT: increased efficiency of cleaning of face and removal of slime to surface. 2 dwg

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RU 2 167 263 C2

Authors

Radionova S.V.

Mavljutov M.R.

Levinson L.M.

Stepanov R.V.

Kilin V.G.

Khamidullin F.Kh.

Dates

2001-05-20—Published

1999-07-12—Filed

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