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2 036 296

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IPC

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Application

4602698/03, 1988-11-09

(22)

Actual filing date

1988-11-09

(45)

Published

1995-05-27

(72)

Inventor

Stepanov R.V.Akchurin Kh.I.Akhmetshin D.M.Germanova A.R.Anichkov V.M.

(73)

Holder

Konstruktorsko-Tekhnologicheskoe Bjuro Tekhnicheskikh Sredstv Burenija Skvazhin

CUTTING-SHEARING DRILL BIT Russian patent published in 1995 - IPC

Abstract RU 2036296 C1

FIELD: drilling. SUBSTANCE: cutting-shearing drill bit has central and discharge unit in form of flexible outlet with jet nozzle on lower end. Outlet is installed in water course above wings intersecting the water course. Wings in water course are made in form of wedge in cross-section. Wedge top is directed towards jet nozzle. Flexible outlet and/or jet nozzle may be made with center of mass displaced relative to drill bit axis. EFFECT: higher efficiency. 2 cl, 3 dwg

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RU 2 036 296 C1

Authors

Stepanov R.V.

Akchurin Kh.I.

Akhmetshin D.M.

Germanova A.R.

Anichkov V.M.

Dates

1995-05-27—Published

1988-11-09—Filed

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