发明名称 Connections for Subsea Pipe-in-Pipe Structures
摘要 A reelable connection between facing ends of opposed pipe-in-pipe sections in which an end wall connects inner and outer pipes of each section to seal an end of an annular space defined between those pipes is disclosed. In each section, the inner pipe protrudes beyond the end wall and the outer pipe and is joined to an inner pipe of the opposed section, leaving opposed ends of the outer pipes of those sections spaced from each other. An insert positioned between the opposed ends of the outer pipes maintains the outer pipe diameter from one section to the other section across the connection. Also, a method of reeling having the steps of making a connection between such pipe-in-pipe sections, positioning an insert to lie substantially flush between the opposed facing ends of the outer pipes, and winding the sections joined by the connection onto a reel.
申请公布号 US2014375049(A1) 申请公布日期 2014.12.25
申请号 US201314374509 申请日期 2013.01.25
申请人 Subsea 7 Limited 发明人 Mair John Arthur;Geertsen Christian;Grobbelaar Wayne
分类号 F16L39/00;F16L59/20;F16L58/18;B23P19/04;F16L1/18 主分类号 F16L39/00
代理机构 代理人
主权项
地址 Sutton GB