发明名称 |
Cutter with polycrystalline diamond layer and conic section profile |
摘要 |
Polycrystalline diamond cutter (PDC) designs which substantially improve the penetration rate of fixed cutter drill bits while simultaneously reducing the wear on the bit during drilling operations are disclosed. The designs are based upon the observation that: 1) the wear pattern of a PDC is roughly a conic section and is parallel to bit rotation, and 2) the cutting surface is perpendicular to the rotation of the bit. The inventive PDC designs provide cutting action both perpendicular and parallel to the direction of bit rotation.
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申请公布号 |
US6068071(A) |
申请公布日期 |
2000.05.30 |
申请号 |
US19970804092 |
申请日期 |
1997.02.20 |
申请人 |
U.S. SYNTHETIC CORPORATION |
发明人 |
JUREWICZ, STEPHEN R. |
分类号 |
E21B10/56;E21B10/567;E21B10/573;(IPC1-7):E21B10/36 |
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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