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2 024 729

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C1

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IPC

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Application

4950033/03, 1991-06-28

(22)

Actual filing date

1991-06-28

(45)

Published

1994-12-15

(72)

Inventor

Ospanov Zh.K.Liberman V.I.Dzhulamanov B.Zh.Ibrashev K.N.Dil'Mukhashev U.K.

(73)

Holder

Vsesojuznyj Nauchno-Issledovatel'Skij Institut Burovoj Tekhniki

METHOD FOR WELL DRILLING Russian patent published in 1994 - IPC

Abstract RU 2024729 C1

FIELD: well construction. SUBSTANCE: method consists in throwing of locking member into drill string during drilling in zone of lost circulation. Membrane is destroyed by increasing pressure and a part of mud flow is directed through sub side hole. Accumulated on well bottom are cuttings, and thick mixture of cuttings and mud is formed. Gaging bit members force particles of cuttings and mixture into well walls and formation pores become clogged to prevent loss of mud circulation. EFFECT: higher reliability in operation. 1 dwg

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RU 2 024 729 C1

Authors

Ospanov Zh.K.

Liberman V.I.

Dzhulamanov B.Zh.

Ibrashev K.N.

Dil'Mukhashev U.K.

Dates

1994-12-15—Published

1991-06-28—Filed

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