Patent ID: 8141664

Claim:
A hybrid drill bit for use in drilling through subterranean formations, the hybrid drill bit comprising: a shank disposed about a longitudinal centerline and adapted to be coupled to a drilling string; at least one fixed blade extending in an axial direction downwardly and coupled to the shank; at least one fixed cutting element arranged on the fixed blade; at least two rolling cutter legs coupled to the shank, each comprising a spindle having a respective spindle axis of rotation; and at least two rolling cutters, each coupled to a respective one of the at least two rolling cutter legs distally from the shank and adapted to rotate about the respective spindle axis of rotation, at least one of the rolling cutters having a spindle axis of rotation disposed at a pin angle that is either greater than 39 degrees and less than or equal to 180 degrees, or greater than or equal to 225 degrees and less than 393 degrees; and wherein the at least two rolling cutters are disposed at different pin angles.