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2 121 558

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IPC

(21) (22)

Application

96116714/03, 1996-08-14

(22)

Actual filing date

1996-08-14

(45)

Published

1998-11-10

(72)

Inventor

Dubenko V.E.Andrianov N.I.Kuligin A.V.

(73)

Holder

Aktsionernoe Obshchestvo Nauchno-Issledovatel'Skij Proektnyj Institut Prirodnykh Gazov"

METHOD OF WELL DRILLING IN HIGH-PERMEABILITY INCOMPETENT GAS-CONTAINING FORMATIONS Russian patent published in 1998 - IPC

Abstract RU 2121558 C1

FIELD: mining; may be used in well drilling. SUBSTANCE: invention essence consists in that in drilling of incompetent gas-containing formations, drilling string bottom is provided with blade spiral tool and rotary drilling is carried out to provided for volume breakage of rock, and well is continuously flushed. Well is deepened by intervals with definite length of each interval determined by respective expression. EFFECT: reduced probability of emergency occurrence.

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RU 2 121 558 C1

Authors

Dubenko V.E.

Andrianov N.I.

Kuligin A.V.

Dates

1998-11-10—Published

1996-08-14—Filed