PDC DRILL BIT USING OPTIMIZED SIDE RAKE ANGLE

摘要

The invention relates to fixed cutter drill bits used to drill boreholes in subterranean formations. The invention provides for a drill bit comprising cutters positioned along a blade of the drill bit in a cone region and cutters positioned along the bla de in a nose region, wherein the cutters in the cone region toward a center of the drill bit have larger side rake angles than the cutters positioned along the nose region.