Earth-boring bit with super-hard cutting elements

An earth-boring bit has a bit body and at least one cantilevered bearing shaft depending inwardly and downwardly from the bit body. A cutter is mounted for rotation on the bearing shaft and includes a plurality of cutting elements. At least one of the cutting elements has a generally cylindrical bod...

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Bibliographic Details
Main Authors PESSIER, RUDOLF C. O, FARR, ROBERT J, JUREWICZ, STEPHEN R, JENSEN M. KENNETH, JONES, PAUL D, SCOTT, DANNY E
Format Patent
LanguageEnglish
French
German
Published 22.10.1997
Edition6
Subjects
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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Summary:An earth-boring bit has a bit body and at least one cantilevered bearing shaft depending inwardly and downwardly from the bit body. A cutter is mounted for rotation on the bearing shaft and includes a plurality of cutting elements. At least one of the cutting elements has a generally cylindrical body formed of hard metal with a convex cutting end. A plurality of substantially linear, parallel lands are formed on the cutting end of the body. The lands have arcuate top surfaces and define grooves between the land having arcuate bottom surfaces. A layer of super-hard material is formed on the cutting end of the body and engages the lands and grooves formed thereon.
Bibliography:Application Number: EP19970302251