Pipe Stacking Optimization and Sea Fastening Analysis of Linepipe Transport

Carlo Jonathan Sihombing, D. Rosyid, R. Riyanto
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Abstract

Subsea pipeline is a system comprised of multiple linepipes that are welded when installed on location used to distribute fluid such as oil and natural gas. Fabricated linepipes are to be stacked on cargo barge and transported to the installation location. This operation takes significant time and involves numerous linepipes. Optimization needs to be done to make sure the transport operation is executed efficiently. Optimization attempt was done using data from Double Joint Linepipe Transport Operation of Tangguh Expansion Project by Saipem Indonesia. Parameters considered during the optimization process include linepipe qualities during stacking, cargo barge strength and stability, and sea fastening property strength. Roark’s Formulas for Stress and Strain formulas are used in pipe stacking analysis to find stacking limit for each type of linepipes. Stability analysis is done by using DNVGL-ST-N001 as a guide and Maxsurf software for modelling. SACS software is used to analyzed sea fastening properties with guidance from DNVGLST-N001. Finally, optimization is done using a multi-criteria optimization method by using values from each analysis as parameters. Optimization results find that pipe stacking method using side support is 8.41% more optimal than standard pipe stacking method from Saipem Indonesia.
管道运输堆管优化及海上紧固分析
海底管道是一个由多个管道组成的系统,这些管道在安装时被焊接起来,用于输送石油和天然气等流体。制作好的管线将堆放在货船上并运输到安装位置。这个操作需要大量的时间,并且涉及大量的管道。需要进行优化以确保有效地执行传输操作。利用印尼Saipem公司唐古扩建项目双管联运作业数据进行了优化尝试。优化过程中考虑的参数包括堆垛时管线质量、货船强度和稳定性、海上紧固性能强度。利用Roark的应力和应变公式对管道进行堆垛分析,找出各种类型管道的堆垛极限。稳定性分析采用DNVGL-ST-N001作为指导,Maxsurf软件进行建模。在DNVGLST-N001的指导下,使用SACS软件分析海上紧固性能。最后,采用多准则优化方法,将各分析结果作为参数进行优化。优化结果表明,采用侧支撑的管堆方法比采用印尼Saipem标准管堆方法的优化效果高8.41%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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