Patent ID: 7594554
Filing Date: 2009-09-29
Classification: E21B

Abstract:
1. A cutter insert for a fixed-cutter rotary drill bit, the cutter insert comprising a generally cylindrical cutter insert body having a generally cylindrical lateral side surface extending to and intersecting at least one substantially planar end surface, the cutter insert body including a cutter recess therein at least partially defined by a planar surface of the cutter insert body and an arcuate surface of the cutter insert body, the arcuate surface intersecting the planar surface and extending therefrom, the planar surface of the cutter insert body oriented at an acute angle of less than ninety degrees (90°) relative to a longitudinal axis of the cutter insert body, the cutter recess extending into the at least one substantially planar end surface and configured to receive a portion of a cutting element therein.