发明名称 |
Dynamically stable hybrid drill bit |
摘要 |
An earth-boring bit comprising a bit body configured at its upper extent for connection into a drillstring. A selected number of fixed blades extend downward from the bit body and a selected number of rolling cutters are mounted for rotation on the bit body. A plurality of rolling-cutter cutting elements are arranged on each rolling cutter and a plurality of fixed-blade cutting elements are arranged on each fixed blade. The selected number of fixed blades exceeds the selected number of rolling cutters by at least one.
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申请公布号 |
US7819208(B2) |
申请公布日期 |
2010.10.26 |
申请号 |
US20080179915 |
申请日期 |
2008.07.25 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
PESSIER RUDOLF CARL;NGUYEN DON Q.;DAMSCHEN MICHAEL STEVEN;DOSTER MICHAEL L. |
分类号 |
E21B10/14 |
主分类号 |
E21B10/14 |
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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