发明名称 |
CUTTING ELEMENT |
摘要 |
A cutting element comprises a primary cutter including a first table of a hard material bonded to a first substrate of less hard form, the first substrate of the primary cutter having a recess formed therein in which a secondary cutter is located, the secondary cutter comprising a second table of a hard material bonded to a second substrate of less hard material, the first and second tables being spaced apart from one another by at least part of the first substrate. |
申请公布号 |
EP2978920(A2) |
申请公布日期 |
2016.02.03 |
申请号 |
EP20140710379 |
申请日期 |
2014.03.12 |
申请人 |
NOV DOWNHOLE EURASIA LIMITED |
发明人 |
MATTHIAS, TERRY;SMITH, HAYDN G. |
分类号 |
B24D18/00;E21B10/567;E21B10/573 |
主分类号 |
B24D18/00 |
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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