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2 030 562

(13)

C1

(51)

IPC

(21) (22)

Application

5061677/03, 1992-09-07

(22)

Actual filing date

1992-09-07

(45)

Published

1995-03-10

(72)

Inventor

Selikhanovich A.M.Goronovich S.N.Mnatsakanov A.V.Rudnitskij A.V.

(73)

Holder

Volgo-Ural'Skij Nauchno-Issledovatel'Skij I Proektnyj Institut Po Dobyche I Pererabotke Serovodorodsoderzhashchikh Gazov

METHOD FOR SHUTTING-OFF LOST CIRCULATION ZONE Russian patent published in 1995 - IPC

Abstract RU 2030562 C1

FIELD: drilling of deep wells. SUBSTANCE: introduced into prepolymer of urethane series is bentonite and let stand up to full hardening. Produced mass is ground to crumbles. Prepolymer and urethane series and bentonite are taken in the following amounts, mas.part.: prepolymer of urethane series 100; bentonite 20-100. Prepolymer of urethane series is used in form of HEISEL-OH IAN or BURETAN. Injection is carried-out with use of standard technology. EFFECT: higher efficiency. 2 cl, 4 tbl

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RU 2 030 562 C1

Authors

Selikhanovich A.M.

Goronovich S.N.

Mnatsakanov A.V.

Rudnitskij A.V.

Dates

1995-03-10—Published

1992-09-07—Filed

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