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发明名称
Plug for use in wellbore operations and apparatus for launching said plug
摘要
申请公布号
GB9723581(D0)
申请公布日期
1998.01.07
申请号
GB19970023581
申请日期
1997.11.07
申请人
WEATHERFORD/LAMB, INC
发明人
分类号
E21B33/05;E21B33/16
主分类号
E21B33/05
代理机构
代理人
主权项
地址
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