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2 014 422

(13)

(51)

IPC

(21) (22)

Application

4925016/03, 1991-04-30

(22)

Actual filing date

1991-04-30

(45)

Published

1994-06-15

(72)

Inventor

Eshimov G.K.Rudenko A.P.Rudenko N.A.

(73)

Holder

Surgutskoe Otdelenie Zapadno-Sibirskogo Nauchno-Issledovatel'Skogo I Proektno-Konstruktorskogo Instituta Tekhnologii Glubokogo Razvedochnogo Burenija

DRILL BIT Russian patent published in 1994 - IPC

Abstract RU 2014422 C1

FIELD: drilling of wells. SUBSTANCE: drill bit has radial-thrust bearing 5 which is mounted between roller bit 7 and head 4. Roller bit 7 is made in the form of disk; neck 3 is provided with through slot fitted into which is lower part of bushing 9. In operation roller bits 7 exhibit uniform wear. EFFECT: extended service life. 3 dwg

Similar patents RU2014422C1

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DRILL BIT	1991	Eshimov G.K.	RU2007538C1
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CORE DRILLING BIT	1990	Rudenko N.A. Rudenko A.P. Eshimov G.K.	RU2017926C1
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BIT FOR ELECTROTHERMOMECHANICAL DRILLING	1990	Shmavonjants V.Sh. Eshimov G.K. Kazakov A.A. Bezdenezhnykh V.I. Budenkov B.A.	RU2017925C1

RU 2 014 422 C1

Authors

Eshimov G.K.

Rudenko A.P.

Rudenko N.A.

Dates

1994-06-15—Published

1991-04-30—Filed