发明名称 |
Earth boring bits with nanocrystalline diamond enhanced elements |
摘要 |
An earth boring bit is shown of the type used to drill subterranean formations. The bit body has an upper extent which is threaded for connection in a drill string extending to the earth's surface. A lower extent of the bit body has a number of cutting elements mounted thereon which engage an earthen formation and cut the formation. At least selected ones of the cutting elements incorporate a nanocrystalline diamond material.
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申请公布号 |
US5954147(A) |
申请公布日期 |
1999.09.21 |
申请号 |
US19970890093 |
申请日期 |
1997.07.09 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
OVERSTREET, JAMES LESLIE;SCOTT, DANNY EUGENE |
分类号 |
E21B10/56;E21B10/567;(IPC1-7):E21B10/50 |
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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