Patent ID: 9644429
Date: 2017-05-09
CPC Classifications: E21B

Claim:
1. A drill bit, comprising: a bit body comprising a surface center; a first blade disposed on the bit body, the first blade comprising a first cutter of a first shape disposed on the first blade; a second blade disposed on the bit body, the second blade comprising a second cutter of a second shape disposed on the second blade; wherein a center of the first cutter is disposed at a first radial distance from the surface center of the bit body; wherein a center of the second cutter is disposed at the first radial distance from the surface center of the bit body; wherein the first and second cutters are disposed at different locations on the bit body; wherein the point on the first cutter furthest away from the bit body is a tip of the first shape that is at a second radial distance from the surface center of the bit body; wherein the point on the second cutter furthest away from the bit body is a tip of the second shape that is at the second radial distance from the surface center of the bit body, and wherein: the tip of the first shape and the tip of the second shape are at a same distance from a surface of the bit body, and a height of the first cutter perpendicular to the surface of the bit body substantially corresponds to a height of the second cutter perpendicular to the surface of the bit body, and trajectories of the height of the first cutter and the height of the second cutter 100% overlap each other during rotary motion of the bit.