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公开(公告)号：US4714379A
公开(公告)日：1987-12-22
申请号：US935423
申请日：1986-11-26
摘要： A deep trench is excavated into a sea bottom. The trench is filled with a slurry, e.g. clay and water, to maintain trench integrity for a period of time. A pipeline is subsequently lowered to the trench bottom by either gravity settlement, jet down using water jets, or vibration.
摘要翻译： 深海沟被挖掘到海底。 沟槽填充有浆料，例如 粘土和水，以保持沟槽的完整性一段时间。 管道随后通过重力沉降，使用水射流或振动下降到沟槽底部。
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2.发明授权Propulsion method and apparatus for advancing a marine pipeline excavation shield 失效推进船用管道挖掘盾构的推进方法和装置
公开(公告)号：US4588329A
公开(公告)日：1986-05-13
申请号：US641629
申请日：1984-08-17
摘要： One construction method for burying offshore pipelines utilizes a segmented excavation shield for forming a trench in the seafloor. The present invention provides a propulsion method for advancing the shield which eliminates the need to pull the shield. This is done by advancing skin plates which are attached to the shield, then advancing the shield by transmitting soil reaction through the skin plates, which remain stationary, to the shield.
摘要翻译： 埋设海上管线的一种施工方法采用分段开挖盾构，在海底形成沟槽。 本发明提供一种用于推进屏蔽的推进方法，其不需要拉动屏蔽。 这是通过前进附着在护罩上的皮肤板进行的，然后通过将保持静止的皮肤板的土壤反应传递到屏蔽来推进屏蔽。
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公开(公告)号：US06292627B1
公开(公告)日：2001-09-18
申请号：US09679085
申请日：2000-10-04
IPC分类号： H05B360
CPC分类号： H05B3/42 , E21B17/015 , F16L1/00 , F16L53/37 , H05B3/06 , H05B2214/03
摘要： Apparatus and method for electrically heating a segment of a subsea pipeline are provided. Electrical power may be supplied about midpoint between the ends of concentric pipes. The annulus between the pipes electrically isolates the pipes, but at the ends of the segment the concentric pipes are electrically connected. The pipes may be electrically connected by bulkheads or by an insulating joint. A toroidal transformer may be placed in the annulus for extracting power at a selected location along the pipeline. An insulating joint allows power to be extracted from the ends of the heated segment. Extracted power may be used for pumps, other devices or for heating jumpers or other short segments of the pipeline. Contiguous segments of a pipeline may be heated, each segment having an electrical connection to the inner and the outer pipe intermediate the ends of the segment. A riser or segment of a riser having a pipe-in-pipe configuration may also be heated.
摘要翻译： 提供了用于电加热海底管道段的设备和方法。 可以在同心管的端部之间的中点附近提供电力。 管道之间的环形物使管道电隔离，但是在段的端部，同心管电连接。 管道可以通过隔板或绝缘接头电连接。 环形变压器可以放置在环形空间中，用于在沿着管道的选定位置提取功率。 绝缘接头允许从加热段的端部提取动力。 提取的功率可用于泵，其他设备或加热跳线或管道的其他短段。 可以加热管道的相邻段，每个段具有与段的端部中间的内管和外管的电连接。 也可以加热具有管内配置的提升管的提升管或段。
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公开(公告)号：US5181798A
公开(公告)日：1993-01-26
申请号：US759327
申请日：1991-09-13
IPC分类号： F16L1/225
CPC分类号： F16L1/225
摘要： A pipelay apparatus and method comprising a steel turntable and a stinger pipe guide which can be supported on the construction deck of a repair vessel or drill ship are provided. The turntable is framed so that loads from two hanging pipes can be securely supported. The table-supported framing members can be moved so the load centerline for each pipeline can be placed an appropriate distance from the center of turntable rotation, which is useful where the two pipelines are of different diameters. This apparatus permits a vessel to simultaneously handle different sizes of pipe and pass large diameter appurtenances without modifying the stinger pipe guide.
摘要翻译： 提供了一种包括钢转盘和支撑在修理船或钻船的施工甲板上的托管引导件的管道铺设设备和方法。 转盘被框架化，从而可以安全地支撑来自两个悬挂管道的负载。 可以移动桌面支撑的框架构件，使得每个管道的负载中心线可以从转盘中心旋转适当的距离放置，这在两个管道的直径不同的地方是有用的。 该装置允许船舶同时处理不同尺寸的管道并且通过大直径附件而不改变托管引导件。
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