Cutter geometry for increased bit life and bits incorporating the same

摘要: An improved cutter for fixed drill bits includes a base portion with longitudinal axis that extends through center of the and cutting face which is generally centered portion. The has periphery edge geometry comprising first arcuate segment second spaced apart arranged opposite each other linear segments disposed there between forming sides face. spans maximum edge-to-edge dimension L in direction corresponds to major W direction, perpendicular less than L.