CUTTING-SHEARING TYPE DRILLING BIT Russian patent published in 1995 - IPC

Abstract RU 2030540 C1

FIELD: well drilling. SUBSTANCE: cutting shearing type drilling bit has nipple 4 whose axis aligns with axis of nozzle 5. EFFECT: improved cooling of cutting members and bottom hole. 4 dwg

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RU 2 030 540 C1

Authors

Stepanov R.V.

Mavljutov M.R.

Matjushin P.N.

Germanova A.R.

Akchurin Kh.I.

Dates

1995-03-10—Published

1990-11-20—Filed