POLYCRYSTALLINE DIAMOND COMPACTS, CUTTING ELEMENTS AND EARTH-BORING TOOLS INCLUDING SUCH COMPACTS, AND METHODS OF FORMING SUCH COMPACTS AND EARTH-BORING TOOLS

Title:

POLYCRYSTALLINE DIAMOND COMPACTS, CUTTING ELEMENTS AND EARTH-BORING TOOLS INCLUDING SUCH COMPACTS, AND METHODS OF FORMING SUCH COMPACTS AND EARTH-BORING TOOLS

Document Type and Number:

WIPO Patent Application WO/2011/139668

Kind Code:

A3

Abstract:

Methods of forming a polycrystalline diamond compact for use in an earth-boring tool include forming a body of polycrystalline diamond material including a first material disposed in interstitial spaces between inter-bonded diamond crystals in the body, removing the first material from interstitial spaces in a portion of the body, selecting a second material promoting a higher rate of degradation of the polycrystalline diamond compact than the first material under similar elevated temperature conditions and providing the second material in interstitial spaces in the portion of the body. Methods of drilling include engaging at least one cutter with a formation and wearing a second region of polycrystalline diamond material comprising a second material faster than the first region of polycrystalline diamond material comprising a first material. Polycrystalline diamond compacts and earth-boring tools including such compacts are also disclosed.

Inventors:

DIGIOVANNI ANTHONY A (US)
GOUDEMOND IAIN P (ZA)

Application Number:

PCT/US2011/033883

Publication Date:

December 22, 2011

Filing Date:

April 26, 2011

Export Citation:

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Assignee:

BAKER HUGHES INC (US)
ELEMENT SIX PRODUCTION PTY LTD (US)
DIGIOVANNI ANTHONY A (US)
GOUDEMOND IAIN P (ZA)

International Classes:

E21B10/50; B23P9/00; B24D3/00

Foreign References:

US20100084197A1	2010-04-08
US20090090563A1	2009-04-09
US20070039762A1	2007-02-22
US20080230280A1	2008-09-25

Other References: