Patent ID: 7096981
Filing Date: 2006-08-29
Classification: E21B

Abstract:
1. An earth boring bit, comprising: a bit body, having at least one depending bit leg and a bit axis of rotation; a rotatable cone mounted to the leg, the cone having a plurality of annular conical lands; a heel row of compacts located adjacent a gage of the cone; an adjacent row of compacts located radially inward and next to the heel row compacts; each of the compacts having a barrel that is interferingly pressed into a mating hole in one of the lands of the cone and a cutting end that protrudes from the cone, the hole for each of the compacts in at least of the one of the rows having an axis that is inclined relative to the land in which it is formed; the compacts being divisible into proximal pairs that are no farther apart from each other than to any other of the compacts, the barrel of one of the compacts of each of the proximal pairs having a portion that is closer to the bit axis than the barrel of the other of the compacts in each of the proximal pairs, defining inboard and outboard barrels of each of the proximal pairs; and the outboard barrel having a barrel axis that is inclined at a lesser degree relative to the bit axis than a barrel axis of the inboard barrel of each of the proximal pairs.