Rock bit with improved gage insert

Details Rock bit with improved gage insert Rock bit with improved gage insert

1992-04-22

1993-04-13

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175426, 175431, E21B 1016

Patent

active

052013766

ABSTRACT:
A roller cutter rock bit includes a cutter constructed with a relief adjacent the cutter heel and gage inserts which each include elongated gage and bottom hole cutting edges which are separated from each other by an obtuse included angle. The edges serve to cut both the bottom of the borehole and the wall when changing the direction of drilling. Both the gage cutting edge and the bottom cutting edge of each gage insert are shaped so as to aggressively cut formation material.

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RockBit International Inc. Leaflet, "The Ultimate Weapon in Gage Warfare", World Oil, Jul. 1991.
Smith International Advertisement, "Introducing Smith Tool's New Steerable-Motor Bits", World Oil, May, 1991.

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