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发明名称
Drilling with casing
摘要
申请公布号
GB2393988(A)
申请公布日期
2004.04.14
申请号
GB20030023983
申请日期
2003.10.13
申请人
* WEATHERFORD/LAMB, INC.;* WEATHERFORD/LAMB INC.
发明人
DAVID M * HAUGEN;FREDERICK THOMAS * TILTON
分类号
E21B4/02;E21B7/20;E21B21/00;(IPC1-7):E21B21/08;E21B43/12
主分类号
E21B4/02
代理机构
代理人
主权项
地址
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