DRILL BIT WITH ENHANCED HYDRAULICS AND EROSION-SHIELDED CUTTING TEETH

Disclosed is a rolling cone drill bit with inner row cutting teeth having portions shielded with an erosion-resistant material that differs in material properties from the tooth's core portion that is more impact resistant. The tooth includes shielding on at least a portion of the upstream end...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	CARAWAY, DOUGLAS, VO, THANG, ROBERTS, TOM SCOTT, IVIE, CRAIG
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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