DRILL BIT ROLLER CUTTER Russian patent published in 1994 - IPC

Abstract RU 2019666 C1

FIELD: well drilling. SUBSTANCE: connectors are made with continuous blunting flats in form of crown with radii running from centers located on roller cutter axis. Connector blunting areas are located below the area of tooth blunting. EFFECT: higher efficiency. 5 dwg

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RU 2 019 666 C1

Authors

Вogomolov R.М.

Вabichev А.А.

Рalashchenko Ju.А.

Dates

1994-09-15—Published

1990-10-16—Filed