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2 227 199

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Application

2001132019/03, 2001-11-27

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Start date

2001-11-27

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Actual filing date

2001-11-27

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Published

2004-04-20

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Inventor

Ramazanov G.S.Giljazov R.M.Sunagatullin A.G.Janturin R.A.Giljazov R.R.Khajrullin V.F.

(73)

Holder

Dochernee Obshchestvo S Ogranichennoj Otvetstvennost'Ju Otkrytogo Aktsionernogo Obshchestva Neftjanaja Kompanija

STRING OF PIPING FOR BORING AND OPERATING HORIZONTAL AND SLANTING WELLS Russian patent published in 2004 - IPC

Abstract RU 2227199 C2

FIELD: well-boring equipment. SUBSTANCE: string of piping has one or more spiral pipes, which have no less than one coil with left screw line and calculated curvature radius of spiral pipe portion, which provides minimal radial space between well wall and operating string and surface of spiral pipe portion. String of piping consists of either several spiral pipes, or alternate straight and spiral pipes, when straight end portion of each spiral pipe has length of no less than 1 meters. EFFECT: better boring and well operating conditions. 2 dwg

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RU 2 227 199 C2

Authors

Ramazanov G.S.

Giljazov R.M.

Sunagatullin A.G.

Janturin R.A.

Giljazov R.R.

Khajrullin V.F.

Dates

2004-04-20—Published

2001-11-27—Filed

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