Rolling cone bit

A drill bit (10) has a bit body and at least one rolling cone cutter. The cutter has a plurality of gage inserts (70) secured to said cone cutter in a circumferential gage row and a plurality of off-gage cutter elements (80) secured to said cone cutter in a circumferential first inner row of cutter...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	JAMES CARL MINIKUS, GARY EDWARD GARCIA, DENNIS CISNEROS, GARY RAY PORTWOOD, PER IVAR NESE, CHRIS E CAWTHORNE
Format:	Patent
Sprache:	eng
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 (10) has a bit body and at least one rolling cone cutter. The cutter has a plurality of gage inserts (70) secured to said cone cutter in a circumferential gage row and a plurality of off-gage cutter elements (80) secured to said cone cutter in a circumferential first inner row of cutter elements. Relationships between the sizes and positions of the inserts (70) and the cutter elements (80) are described.