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经营范围
发明名称
Unidirectional cementing plug
摘要
申请公布号
GB2397837(A)
申请公布日期
2004.08.04
申请号
GB20040002133
申请日期
2004.01.30
申请人
* WEATHERFORD/LAMB, INC;* WEATHERFORD/LAMB INC.
发明人
RICHARD L * GIROUX;DAVID J * BRUNNERT;GREGORY GUY * GALLOWAY;CHRIS * JORDAN
分类号
E21B33/134;E21B33/16;(IPC1-7):E21B33/134;E21B33/129
主分类号
E21B33/134
代理机构
代理人
主权项
地址
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