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发明名称
Apparatus and method for communicating information between a wellbore and surface
摘要
申请公布号
GB2467681(B)
申请公布日期
2012.10.17
申请号
GB20100008221
申请日期
2008.11.12
申请人
BAKER HUGHES INCORPORATED
发明人
RALF ZAEPER;JOHN D MACPHERSON;MATHIAS MENGE
分类号
E21B47/18;E21B47/12
主分类号
E21B47/18
代理机构
代理人
主权项
地址
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