Patent ID: 8047308

Claim:
A rotary drill bit for forming a wellbore, comprising: a bit body having an upper portion adapted for engagement with a drill string for rotation of the bit body; a number of cutting structures engaged with the bit body a fluid cavity formed in the bit body and sized to receive drilling fluid from an attached drill string; a plurality of fluid flow passageways extending from the cavity to respective nozzles engaged with exterior portions of the bit body; each nozzle having a nozzle body with a fluid flow passageway extending between an inlet portion and an outlet portion of the nozzle body; the fluid flow passageway having a cross-section generally decreasing from the inlet portion to the outlet portion of the nozzle body; a first Coanda surface disposed on and extending from the outlet portion; and the first Coanda surface operable to direct a fluid stream from the nozzle body in a desired direction.