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发明名称
SHEARABLE RISER JOINT
摘要
申请公布号
GB9317923(D0)
申请公布日期
1993.10.13
申请号
GB19930017923
申请日期
1993.08.27
申请人
PETROLEO BRASILEIRO S.A. PETROBRAS
发明人
分类号
E21B17/01;E21B17/08;E21B29/08;E21B29/12;E21B33/038
主分类号
E21B17/01
代理机构
代理人
主权项
地址
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