DRILL BIT WITH CANTED GAGE INSERT

摘要

A rolling cone drill bit is provided that has gage inserts on the first r ow from the bit axis to cut to full gage diameter that have a cutting portion enhanced with a layer of super abrasive material. The gage cutting surface has a cent er axis that is canted to be more normal to the gage curve such that the its point o f contact at gage is away from the thinner portion of the layer of super abrasive material.