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公开(公告)号:US06712150B1
公开(公告)日:2004-03-30
申请号:US10070788
申请日:2002-05-01
IPC分类号: E21B1908
CPC分类号: E21B17/203 , E21B23/006 , E21B34/102 , E21B34/14 , E21B2034/005
摘要: A dual tubing coiled tubing string, including methods of assembly, that includes an inner tubing sealed within at least an upper portion of an outer tubing.
摘要翻译: 双管螺旋管柱,包括组装方法,其包括密封在外管的至少上部内的内管。