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 |
IN9854DEN2014(A) |
申请公布日期 |
2015.08.07 |
申请号 |
IN2014DELNP9854 |
申请日期 |
2014.11.20 |
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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