Inclined leg earth-boring bit

摘要

An earth-boring bit has a body with a threaded pin on the upper end for connecting to a drill string. Bit legs are formed symmetrically on the exterior of the body and extend downward. The lower portion of each bit leg is inclined and offset circumferentially from the upper portion. A cutter is mounted to the lower portion of each bit leg for rotation about a cutter axis. Nozzle bosses are located between each bit leg. A flow channel exists on both sides of each nozzle boss. The nozzle boss is inclined in a similar direction to the bit leg.