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发明名称
Method and device for adjusting the buoyancy of an off-shore drilling pipe riser
摘要
申请公布号
GB9924100(D0)
申请公布日期
1999.12.15
申请号
GB19990024100
申请日期
1999.10.13
申请人
INSTITUT FRANCAIS DU PETROLE
发明人
分类号
E21B17/01
主分类号
E21B17/01
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代理人
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