EARTH-BORING TOOLS WITH EXTENDED CUTTING FEATURES AND RELATED METHODS

摘要

A superabrasive-impregnated earth-boring rotary drill bit includes cutting features extending outwardly from a bit body in a nose region of the drill bit. The cutting features comprise a composite material including superabrasive particles embedded within a matrix material. The cutting features extend from an outer surface of the bit body by a relatively high average distance. Methods of forming a superabrasive-impregnated earth-boring rotary drill bit include the formation of cutting features that extend outwardly from a bit body of a drill bit in a nose region of the drill bit. The cutting features are formed to comprise a particle-matrix composite material that includes superabrasive particles embedded within a matrix material. The cutting features are further formed such that they extend from the outer surface of the bit body by a relatively high average distance.

主权项

1. An earth-boring rotary drill bit, comprising:
a bit body; and cutting features extending outwardly from the bit body and defining a plurality of fluid channels extending over the bit body between the cutting features, the cutting features carrying a plurality of elongated cutting posts received within receptacles formed within the cutting features, at least one of the elongated cutting posts having a length of at least about 1.50 inches.