Patent ID: 9103170
Filing Date: 2015-08-11
Classification: E21B

Abstract:
1. A drill bit, comprising: a body having a lower end face for engaging a rock formation, the end face having a plurality of raised ribs extending a height from the face of the body and separated by a plurality of channels therebetween; wherein each of the plurality of ribs has a width measured between a leading surface and a trailing surface of the rib, wherein the leading surface faces in the direction of bit rotation and the trailing surface faces in a direction away from bit rotation; wherein the width of at least a portion of at least one of the plurality of ribs varies along at least a portion of the height of the rib; and wherein a major volume of the at least one rib comprises super abrasive particles impregnated within a supporting material formed from at least two different impregnated materials, wherein the two different impregnated materials have at least a difference in hardness and/or diamond concentration.