首页> 外文会议>ASME International Conference on Ocean, Offshore and Arctic Engineering >THROUGH-LIFE RELIABILITY DESIGN OF LIGHT HP/HT PIPELINES ON SOFT SLOPING SEABED WITH BUCKLING, ANCHORING AND ROUTE BEND STABILITY ISSUES
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THROUGH-LIFE RELIABILITY DESIGN OF LIGHT HP/HT PIPELINES ON SOFT SLOPING SEABED WITH BUCKLING, ANCHORING AND ROUTE BEND STABILITY ISSUES

机译:光滑海底屈曲,锚固和路径弯曲稳定性问题的轻质HP / HT管道的寿命可靠性设计

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Some recent projects have required pipeline routings from cluster wells to platforms or FPSOs along undulating seabed with lengthy route bends, escarpment and change of slope features. The operational in-place stability of the relatively light insulated pipelines was the primary design concern, and was compounded by interactions between seabed induced global buckling and pipeline walking due to significant seabed slope. In addition, onerous weld defect criteria limited the extent of allowable bending to which the HP/HT pipelines can be subject during their through-life operation. This necessitated the development of reliable planned buckle schemes which would work with periodic pipeline anchors placed along the lengths of the routes of these pipelines to control walking and associated bend and planned buckle pull-out during routine start-up/shutdown operational cycles. Pipe-soil interaction guidance such as SAFEBUCK and project-specific pipe soil testing results had significant influences on realistic simulation of through-life in-place stability. A state of the art reliability tool was developed for these projects based on guidance available in the public domain and the characteristic 3D global buckle formations evident along operational pipelines with a significantly undulating seabed.
机译:一些最近的项目需要集群井的管道路线到平台或FPSO,沿着带有冗长的路线弯曲,悬崖悬垂和斜坡特征的变化。相对较轻的绝缘管道的操作地置稳定性是主要的设计问题,并且由于大型海底斜坡,通过海底诱导的全球屈曲和管道之间的相互作用复合。此外,繁重的焊接缺陷标准限制了允许弯曲的程度,在其常规操作期间可以进行HP / HT管道的允许弯曲的程度。这需要开发可靠的计划扣车方案,该方案将与沿着这些管道的路线的长度放置的定期管道锚,以控制在常规启动/关闭操作周期期间控制行走和相关的弯曲和计划扣拉出。诸如Safebuck和项目特定管道土壤测试结果的管道互动指导对常规稳定性的现实模拟具有显着影响。基于公共领域可用的指导和沿着运营管道的特征3D全球扣板,为这些项目开发了最先进的可靠性工具,沿着运营管道明显,具有显着波动海底的指导。

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