Patent ID: 9556681
Date: 2017-01-31
CPC Classifications: E21B

Claim:
1. A hybrid rotary drill bit comprising: a bit body; at least one fixed blade extending in an axial direction downwardly from the bit body and having at least one fixed cutting element disposed thereon; at least one rolling cutter leg extending in an axial direction downwardly from the bit body; a rolling cutter rotatably coupled to the at least one rolling cutter leg and having an interior recess formed within the rolling cutter, the recess comprising a circumferential groove; at least one cutting element disposed on the rolling cutter; and a divorced rolling cutter bearing assembly configured to removably engage a portion of the at least one rolling cutter leg and comprising: the divorced rolling cutter bearing assembly comprising at least one bearing element coupled to an external portion of the divorced rolling cutter bearing assembly and configured to facilitate rotation between the rolling cutter and the at least one roller cutter leg.