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发明名称
Method of designing a roller-cone drill bit.
摘要
申请公布号
EP1498575(A3)
申请公布日期
2006.05.17
申请号
EP20040025235
申请日期
1999.08.31
申请人
HALLIBURTON ENERGY SERVICES, INC.
发明人
CHEN, SHILIN
分类号
E21B10/16;E21B10/08;E21B41/00
主分类号
E21B10/16
代理机构
代理人
主权项
地址
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