Polycrystalline diamond cutting element and method of using same

A polycrystalline diamond cutting (PDC) element (10) of a drill (12) bit of a downhole drilling tool is provided. The PDC element has a substrate (24), a diamond table (22) and at least one pattern (40a, b, c). The diamond table has an initial cutting edge (50) along a periphery thereof. The pattern...

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Bibliographische Detailangaben
Hauptverfasser:	SETLUR DEEPTHI RAJ, HUGHES MICHAEL D, TRONCOSO JOHN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS CASTING CHEMISTRY EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FERROUS OR NON-FERROUS ALLOYS FIXED CONSTRUCTIONS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	A polycrystalline diamond cutting (PDC) element (10) of a drill (12) bit of a downhole drilling tool is provided. The PDC element has a substrate (24), a diamond table (22) and at least one pattern (40a, b, c). The diamond table has an initial cutting edge (50) along a periphery thereof. The pattern integrally formed within the diamond table. The pattern(s) defining at least one discontinuity about the diamond table that, in operation, selectively breaks away upon impact to create new cutting edges in the diamond table whereby a sharp cutting edge is continuously exposed to a material being cut.