EARTH PENETRATING ROTARY DRILL BIT WITH HELICAL PORTS

A drill bit (20) that has a drill bit body (30) with a side wall (36) and opposite ends (32, 34). A distal one (32) of the opposite ends of the drill bit body (30) receives a cutting insert (22). The drill bit body (30) contai ns at least two helical debris ports (46) in the side wall (36) thereof....

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	BISE, DOUGLAS E
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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