FIXED CUTTER DRILL BIT HEEL AND BACK-REAM CUTTER PROTECTIONS FOR ABRASIVE APPLICATIONS

摘要

A method of manufacturing a fixed cutter drill bit may include loading a first matrix material of controlled thickness to at least a portion of a mold cavity corresponding to a heel surface of at least one blade; loading a second matrix material into the remaining portions of the mold cavity; heating the mold contents to form a matrix body of the fixed cutter drill bit; and disposing at least one back reaming element in at least one back reaming cutter pocket.