发明名称 |
Drag-bit drilling with multi-axial tooth inserts |
摘要 |
Angled insertable drag bit teeth having a front portion at an oblique angle to a shank portion: the front portion is nearly parallel to the direction of thrust during cutting, and is bonded, along a substantial part of its length, to a groove in the bit body. The shank portion extends down into a pocket in the bit body. Preferably the front portion is faced with a superhard material such as polycrystalline-diamond-compact.
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申请公布号 |
US6302224(B1) |
申请公布日期 |
2001.10.16 |
申请号 |
US19990311155 |
申请日期 |
1999.05.13 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
SHERWOOD, JR. WILLIAM H. |
分类号 |
E21B10/56;E21B10/573;(IPC1-7):E21B10/42 |
主分类号 |
E21B10/56 |
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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