发明名称 |
Ultra hard material cutter with shaped cutting surface |
摘要 |
A cutting layer is provided having a radially extending depression formed on the exposed surface of the cutting element's cutting layer. A corresponding depression may be formed on the substrate end surface below the depression formed on the cutting layer. Furthermore, secondary shallower depressions may be formed on the cutting layer. The cutting element is typically mounted in a drag bit such that the cutting layer radially extending depression makes contact with the earth formations. |
申请公布号 |
GB2369841(B) |
申请公布日期 |
2004.12.01 |
申请号 |
GB20010027857 |
申请日期 |
2001.11.21 |
申请人 |
* SMITH INTERNATIONAL INC |
发明人 |
STEWART * MIDDLEMISS;RONALD K * EYRE |
分类号 |
B23C5/20;C04B37/02;E21B10/56;E21B10/567;E21B10/573;(IPC1-7):E21B10/46 |
主分类号 |
B23C5/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|