DRILL BIT, HARD MEMBER, AND BIT BODY

DRILL BIT, HARD MEMBER, AND BIT BODY

A rotary drill bit for penetrating earth strata wherein the drill bit includes a drill bit body that has an axial forward end. The drill bit body has a hard insert, which is preferably monolithic, that is affixed to the drill bit body at the axial forward end thereof. The hard insert presents at lea...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HAGA PHILLIP W, RUTHERFORD JAMES E, BISE DOUGLAS E, CONDON GARY J, MASSA TED R, BELSHEIM STEPHEN T, DUNN CURNIE A
Format: Patent
Sprache:eng ; pol
Schlagworte:
BORING
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
PERFORMING OPERATIONS
TRANSPORTING
TURNING
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Beschreibung
Zusammenfassung:A rotary drill bit for penetrating earth strata wherein the drill bit includes a drill bit body that has an axial forward end. The drill bit body has a hard insert, which is preferably monolithic, that is affixed to the drill bit body at the axial forward end thereof. The hard insert presents at least three discrete leading cutting edges for cutting the earth strata.