发明名称 |
OFFSHORE PIPE STRING WITH DIFFERENT PIPE JOINTS |
摘要 |
A pipe string (44) is pulled out by a tug boat (30) from a floating structure (12) such as a production vessel, as pipe sections (54, 56) are connected in series on the vessel, to eventually lay the pipe string in a catenary curve from the vessel to the sea floor and then along the sea floor to a distant subsea well head (86). To save time and cost in coupling the pipe sections, lower fatigue resistant pipe couplings, such as non weld-on couplings (120) that include a threaded sleeve (134), are used to connect pipe sections that will lie in a quiescent zone such as on the sea floor (zone Az), and in a zone (Cz) lying along the middle of the catenary curve. Higher fatigue resistant pipe couplings such as weld-on couplings (150) are used along active zones such as top and bottom zones (Dz, Bz) of the catenary curve.
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申请公布号 |
WO2008063345(A3) |
申请公布日期 |
2008.11.27 |
申请号 |
WO2007US22512 |
申请日期 |
2007.10.23 |
申请人 |
SINGLE BUOY MOORINGS, INC.;POLLACK, JACK;RIGGS, DAVID, C. |
发明人 |
POLLACK, JACK;RIGGS, DAVID, C. |
分类号 |
F16L1/12 |
主分类号 |
F16L1/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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