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发明名称
METHODS, SYSTEMS, AND BOTTOM HOLE ASSEMBLIES INCLUDING REAMER WITH VARYING EFFECTIVE BACK RAKE
摘要
申请公布号
EP2297424(A4)
申请公布日期
2013.09.04
申请号
EP20090733707
申请日期
2009.04.23
申请人
BAKER HUGHES INCORPORATED
发明人
MEISTER, MATTHIAS
分类号
E21B10/26;E21B10/30
主分类号
E21B10/26
代理机构
代理人
主权项
地址
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