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2 029 050

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C1

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IPC

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Application

4954376/03, 1991-06-28

(22)

Actual filing date

1991-06-28

(45)

Published

1995-02-20

(72)

Inventor

Skrjabin G.F.Brazhentsev V.P.Torgashov A.V.Loginov A.A.Batalov S.P.

(73)

Holder

Nauchno-Issledovatel'Skij Institut Burovoj TekhnikiSpetsial'Noe Konstruktorskoe Bjuro Po Dolotam Proizvodstvennogo Ob"EdinenijaUkhtinskoe Proizvodstvenno-Geologicheskoe Ob"Edinenie Po Razvedke Nefti I Gaza

ROLLER DRILL BIT Russian patent published in 1995 - IPC

Abstract RU 2029050 C1

FIELD: well drilling. SUBSTANCE: each leg 2 of roller drill bit has vertical opening 5 on its front face. Opening 5 is deepened in body 1 at least down to level of radius of stopping shoulder 6. Back of each leg 2 may have lubricant chamber 7. Lubricant chamber 7 is displaced towards hydraulic motor unit 4 relative to longitudinal axis of drill bit. EFFECT: higher efficiency. 2 cl, 3 dwg

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RU 2 029 050 C1

Authors

Skrjabin G.F.

Brazhentsev V.P.

Torgashov A.V.

Loginov A.A.

Batalov S.P.

Dates

1995-02-20—Published

1991-06-28—Filed

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