Patent ID: 9115552
Filing Date: 2015-08-25
Classification: E21B,G06F

Abstract:
1. A downhole drilling tool operable to form a wellbore comprising: a bit body with a bit rotational axis extending through the bit body; a plurality of blades disposed on exterior portions of the bit body; each blade having a plurality of cutting elements disposed thereon; the cutting elements comprising a plurality of at least a first type of cutting elements disposed on one or more high impact blades, the first type of cutting elements selected from a group consisting of high impact resistant cutters, high wear resistant cutters and combinations thereof; and the cutting elements comprising a plurality of at least a second type of cutting elements disposed on one or more low impact blades, the second type of cutting elements selected from a group consisting of cutters that are low impact resistant cutters, low wear resistant cutters, and combinations thereof.