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2 049 904

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C1

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IPC

(21) (22)

Application

3941777/03, 1985-08-01

(22)

Actual filing date

1985-08-01

(45)

Published

1995-12-10

(72)

Inventor

Zel'Tser P.Ja.Markov A.P.Abramson M.G.Griskin E.N.Jakimchuk U.N.

(73)

Holder

Vostochno-Sibirskij Nauchno-Issledovatel'Skij Institut Geologii, Geofiziki I Mineral'Nogo Syr'Ja

CONE DRILL BIT Russian patent published in 1995 - IPC

Abstract RU 2049904 C1

FIELD: well drilling. SUBSTANCE: cone drill bit has body, legs 1, cones 6, lubricator 10 with spring-loaded piston 11. Bit support has packing rings. Packing ring 17 is secured in cone, and packing ring 18 is secured to mating surface of lug. Packing ring 18 is spring-loaded. Installed between these packing rings is floating ring with through holes. Cone end face has recesses with inclination opposite to cone rotation. Above-piston hollow of lubricator is communicated with outer surface of drill bit body. EFFECT: higher efficiency. 3 dwg

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RU 2 049 904 C1

Authors

Zel'Tser P.Ja.

Markov A.P.

Abramson M.G.

Griskin E.N.

Jakimchuk U.N.

Dates

1995-12-10—Published

1985-08-01—Filed

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