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发明名称
Fremgangsmate for dynamisk regulering av bunnhullssirkulasjonstrykket i et bronnhull
摘要
申请公布号
NO324116(B1)
申请公布日期
2007.08.27
申请号
NO20020005429
申请日期
2002.11.13
申请人
PRECISION ENERGY SERVICES LTD
发明人
HOYER CAREL W J;EVERITT PETER R;GRAHAM ROBERT A;STEINER ADRIAN
分类号
E21B21/08;E21B21/00
主分类号
E21B21/08
代理机构
代理人
主权项
地址
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