CUTTING ELEMENTS FOR EARTH-BORING TOOLS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS AND RELATED METHODS

Title:

CUTTING ELEMENTS FOR EARTH-BORING TOOLS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS AND RELATED METHODS

Document Type and Number:

WIPO Patent Application WO/2011/133850

Kind Code:

A3

Abstract:

Cutting elements, earth-boring drill bits having such cutting elements and related methods are described herein. In some embodiments, a cutting element for an earth-boring tool may include a diamond table having an indentation in a cutting face thereof and a shaped feature in a substrate at the interface between the diamond table and the substrate, the shaped feature corresponding to the indentation in the cutting face of the diamond table. In further embodiments, a cutting element for an earth-boring tool may include a sacrificial structure positioned within an indentation in a diamond table. In additional embodiments, a method of forming a cutting element may include positioning a sacrificial structure in a mold, positioning a powdered precursor material over the sacrificial structure, and pressing and sintering the powdered precursor material to form a diamond table having an indentation in a cutting face formed by the sacrificial structure.

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Inventors:

DIGIOVANNI ANTHONY A (US)
LYONS NICHOLAS J (US)
HALE MATTHEW S (US)
LIVERSAGE JOHN H (ZA)

Application Number:

PCT/US2011/033559

Publication Date:

December 29, 2011

Filing Date:

April 22, 2011

Export Citation:

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Assignee:

BAKER HUGHES INC (US)
ELEMENT SIX PRODUCTION PTY LTD (ZA)
DIGIOVANNI ANTHONY A (US)
LYONS NICHOLAS J (US)
HALE MATTHEW S (US)
LIVERSAGE JOHN H (ZA)

International Classes:

E21B10/50; B23P9/00; B24D3/00

Foreign References:

US6065554A	2000-05-23
US5447208A	1995-09-05
US20080308321A1	2008-12-18
US6550556B2	2003-04-22

Other References: