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发明名称
Dual valve well control in underbalanced wells
摘要
申请公布号
AU2002210679(A8)
申请公布日期
2006.11.09
申请号
AU20020210679
申请日期
2001.10.17
申请人
WEATHERFORD/LAMB INC.
发明人
GIANCARLO PIA
分类号
E21B34/10;E21B21/00;E21B34/08
主分类号
E21B34/10
代理机构
代理人
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地址
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