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2 049 215

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IPC

(21) (22)

Application

5040645/03, 1992-04-29

(22)

Actual filing date

1992-04-29

(45)

Published

1995-11-27

(72)

Inventor

Anikin A.A.Anikin A.A.Batalov S.P.Glinskij A.E.Loginov A.A.Matveenko L.M.Razuvaev V.D.Torgashov A.V.

(73)

Holder

Razuvaev Vladimir Dmitrievich

CONE DRILL BIT Russian patent published in 1995 - IPC

Abstract RU 2049215 C1

FIELD: well drilling. SUBSTANCE: cone drill bit has slotted openings of side nozzles which are directed to under lower lines of contours of cone meridian section opposite to direction of rotation. Slotted openings of central nozzle are directed to upper lines of contours of cone meridian section opposite to direction of bit rotation. Bottom parts of central and side nozzles are made spherical. EFFECT: higher efficiency. 8 dwg

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RU 2 049 215 C1

Authors

Anikin A.A.

Batalov S.P.

Glinskij A.E.

Loginov A.A.

Matveenko L.M.

Razuvaev V.D.

Torgashov A.V.

Dates

1995-11-27—Published

1992-04-29—Filed