| 发明名称 |
ELEMENTO DE CORTE PARA PERFORACIONES DE ROCA . |
| 摘要 |
<p>A rock cutter (10) for improving the drilling performance of drag-type bits includes a body portion (12) and a cutter element (14) having an outer surface shaped to create a plowing effect so as to direct rock chips away from the surface. The cutter element is preferably V-shaped and formed of a composite compact of diamond cubic boron nitride or wurtzite boron nitride. <IMAGE></p> |
| 申请公布号 |
ES257023(Y) |
申请公布日期 |
1982.04.16 |
| 申请号 |
ES19230002570U |
申请日期 |
1979.09.28 |
| 申请人 |
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发明人 |
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| 分类号 |
E21B10/46;E21B10/56;E21B10/567;E21B10/58;(IPC1-7):21B12/00 |
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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