发明名称 |
Cutter having shaped working surface with varying edge chamfer |
摘要 |
<p>A modified cutting element that includes a base portion, an ultrahard layer disposed on said base portion, and at least one modified region disposed adjacent to a cutting face of the cutter is described. In certain applications, the ultrahard layer comprises thermally stable polycrystalline diamond.</p> |
申请公布号 |
GB0508875(D0) |
申请公布日期 |
2005.06.08 |
申请号 |
GB20050008875 |
申请日期 |
2005.04.29 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
|
分类号 |
E21B10/46;E21B10/56;E21B10/567;E21B10/573 |
主分类号 |
E21B10/46 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|