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:弯曲,锚固和路线弯曲稳定性问题的软坡海底轻质HP / HT管道的通行可靠性设计

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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 startup/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:最近的一些项目要求沿着起伏的海床从集束井到平台或FPSO的管道路线,路线弯曲长,陡峭,坡度特征也要改变。相对较轻的绝缘管道的运行就地稳定性是主要的设计考虑因素,并且由于大量的海底倾斜而使海底引起的整体屈曲和管道行走之间的相互作用更加复杂。另外,繁重的焊接缺陷标准限制了HP / HT管道在其整个使用寿命期间可能遭受的弯曲允许程度。这就需要开发可靠的计划扣环方案,该方案将与沿着这些管道的路线长度放置的定期管道锚一起工作,以控制例行的启动/关闭操作周期中的行走以及相关的弯头和计划的扣环拔出。 SAFEBUCK等管道与土壤的相互作用指导以及特定项目的管道土壤测试结果对整个生命周期就地稳定性的真实模拟产生了重大影响。基于公共领域中可用的指导和沿显着的海底起伏的运营管道中明显的特征性3D全球屈曲地层,为这些项目开发了最先进的可靠性工具。

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