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IPC

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Application

99117670/03, 1999-08-09

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Start date

1999-08-09

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Actual filing date

1999-08-09

(45)

Published

2001-08-20

(72)

Inventor

Takhautdinov Sh.F.Jusupov I.G.Abdrakhmanov G.S.Khamit'Janov N.Kh.Zajnullin A.G.Orlov G.A.Amerkhanova S.I.Filippov V.P.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Tatarskij Nauchno-Issledovatel'Skij I Proektnyj Institut Nefti

METHOD OF DRILLING OF AUXILIARY WELLBORE FROM FLOW STRING Russian patent published in 2001 - IPC

Abstract RU 2172384 C2

FIELD: multihole drilling, particularly, technology of drilling of auxiliary wellbores from parent well flow string. SUBSTANCE: the essence of invention consists in that drilling of auxiliary wellbore from parent well flow string is carried out to roof of producing formation, then, insulating material is injected into well and drilled part of auxiliary wellbore is cased with expanded special-shape pipes and producing formation is tapped with bottom-hole pressure maintained equal to formation pressure or depressive with respect to it. EFFECT: higher oil recovery from well. 3 dwg

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RU 2 172 384 C2

Authors

Takhautdinov Sh.F.

Jusupov I.G.

Abdrakhmanov G.S.

Khamit'Janov N.Kh.

Zajnullin A.G.

Orlov G.A.

Amerkhanova S.I.

Filippov V.P.

Dates

2001-08-20—Published

1999-08-09—Filed