发明名称 COLUNA DE TUBO DE ALTO-MAR COM JUNTAS DE TUBO DIFERENTES
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.
申请公布号 BRPI0718787(A2) 申请公布日期 2013.12.03
申请号 BR2007PI18787 申请日期 2007.10.23
申请人 SINGLE BUOY MOORINGS INC. 发明人 JACK POLLACK;DAVID C. RIGGS
分类号 F16L1/12 主分类号 F16L1/12
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