发明名称 |
DIAMOND CUTTING ELEMENTS FOR DRILL BITS SEEDED WITH HCP CRYSTALLINE MATERIAL |
摘要 |
A polycrystalline diamond compact (PDC), which is attached or bonded to a substrate to form a cutter for a drill bit, is comprised of sintered polycrystalline diamond interspersed with a seed material which has a hexagonal close packed (HCP) crystalline structure. A region of the sintered polycrystalline diamond structure, near one or more of its working surfaces, which has been seeded with an HCP seed material prior to sintering, is leached to remove catalyst. Selectively seeding portions or regions of a sintered polycrystalline diamond structure permits differing leach rates to form leached regions with differing distances or depths and geometries. |
申请公布号 |
WO2013170083(A1) |
申请公布日期 |
2013.11.14 |
申请号 |
WO2013US40422 |
申请日期 |
2013.05.09 |
申请人 |
ULTERRA DRILLING TECHNOLOGIES, L.P. |
发明人 |
MURDOCK, ANDREW, DAVID;MUMMA, MATTHEW DOUGLAS;CLEGG, JOHN MARTIN;DUBOSE, WILLIAM HENRY;BOWDEN, NEAL ALAN |
分类号 |
E21B10/46;E21B10/567 |
主分类号 |
E21B10/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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