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(19)

(11)

2 459 064

(13)

(51)

IPC

E21B10/36(2006-01-01)

E21B10/43(2006-01-01)

E21B10/46(2006-01-01)

(21) (22)

Application

2011114079/03, 2011-04-12

(24)

Start date

2011-04-12

(22)

Actual filing date

2011-04-12

(45)

Published

2012-08-20

(72)

Inventor

Kononov Viktor MikhajlovichZakharov Jurij NikitovichMikhajlov Jurij Vasil'EvichTsaturjan Ehduard OvanesovichPanin Nikolaj Mitrofanovich

(73)

Holder

Panin Nikolaj Mitrofanovich

DRILLING BIT Russian patent published in 2012 - IPC E21B10/36 E21B10/43 E21B10/46

Abstract RU 2459064 C1

FIELD: mining.

SUBSTANCE: drilling bit includes housing with cleaning channels, connection shank and working head reinforced by cylindrical hard-alloy inserts (CHAI). Drilling bit is equipped with additional calibrating CHAI vertically attached on the side surface of working head. Main CHAI are oriented by their side surface parallel to horizontal plane and their end areas from well walls side have ledges for contact with end areas of additional CHAI.

EFFECT: increase of bit efficiency at drilling the abrasive rocks, reduction of hard alloy consumption.

2 dwg

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RU 2 459 064 C1

Authors

Kononov Viktor Mikhajlovich

Zakharov Jurij Nikitovich

Mikhajlov Jurij Vasil'Evich

Tsaturjan Ehduard Ovanesovich

Panin Nikolaj Mitrofanovich

Dates

2012-08-20—Published

2011-04-12—Filed