Rock bit with improved gage insert

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

E - Fixed Constructions

21

B

E21B 10/16 (2006.01) E21B 10/52 (2006.01)

Patent

CA 2093847

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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