| 发明名称 |
DRILL BIT FOR WELL DRILLING |
| 摘要 |
<p>Earth boring drill is formed of steel core with steel cutting element holders fastened in slots in the core; matrix bonding material on faces of steel cutting elements in turn hold diamond cutting tools; fluid passages are provided in core and steel cutting element holders.</p> |
| 申请公布号 |
CA1150236(A) |
申请公布日期 |
1983.07.19 |
| 申请号 |
CA19800351095 |
申请日期 |
1980.05.01 |
| 申请人 |
CHRISTENSEN, INC. |
发明人 |
JUERGENS, RAINER |
| 分类号 |
B22F7/08;E21B10/46;E21B10/56;E21B10/567;E21B10/60;(IPC1-7):E21B10/00 |
主分类号 |
B22F7/08 |
| 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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