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....

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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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Beschreibung
Zusammenfassung:	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. The drill bit body (30) further contains a helical scallop (48) that corresponds to each one of the helical debris ports (46). Each one of the helical scallo ps (48) surrounds so as to define the periphery of its corresponding one of the helical debris ports (46).