发明名称 |
Rotary drill bit design method |
摘要 |
A method for use in designing rotary drill bits comprises determining locations in which cutters are to be provided, determining likely wear rates for cutters positioned at those locations, and using the likely wear rates to chose between relatively high and relatively low wear rate cutters for each location. The cutters all have substantially the same impact toughness.
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申请公布号 |
US6435058(B1) |
申请公布日期 |
2002.08.20 |
申请号 |
US20010682466 |
申请日期 |
2001.09.06 |
申请人 |
CAMCO INTERNATIONAL (UK) LIMITED |
发明人 |
MATTHIAS TERRY R.;GRIFFIN NIGEL DENNIS;HUGHES PETER RAYMOND |
分类号 |
B22F7/06;B23B27/14;C04B35/52;C04B37/02;C04B41/45;C04B41/53;C04B41/81;C04B41/91;E21B7/06;E21B7/18;E21B10/00;E21B10/42;E21B10/43;E21B10/56;E21B10/567;E21B10/573;E21B10/60;E21B21/10;F16C33/04;(IPC1-7):B21K5/04 |
主分类号 |
B22F7/06 |
代理机构 |
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代理人 |
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地址 |
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