石油勘探与开发2013，Vol.40Issue(1)：111-116,6.
海流及海床摩擦对油气管道提吊及沉放影响分析
Impacts of ocean current and seabed friction on the picking-up and laying-down processes of oil and gas pipelines
摘要
Abstract
Based on engineering practice of the picking-up and laying-down processes of offshore pipelines, a finite element model was established. On the basis of the model, methods and steps of the picking-up and laying-down operations were determined, and the impacts of currents and seedbed friction on the two operations were studied. The shape and stress distribution of the pipeline under the influences of longitudinal current, lateral current and seabed friction when picked up and laid down were analyzed using finite element analysis software. The results show that the longitudinal current has almost no effect on the pipeline shape and stress distribution in the picking-up and laying-down processes, while the lateral current results in significant deformation of the pipeline in the horizontal plane and raises the overall stress level of the pipeline. The friction between the seabed and the pipeline impedes the lateral displacement of the pipeline when it is laid down. The rougher the seabed, the smaller the overall lateral displacement of the pipeline is. When the pipeline reaches the equilibrium state after it is laid down, the friction between the pipeline and the seabed becomes larger with the increase of the friction coefficient.关键词
有限元模型/海流/摩擦系数/应力/变形Key words
finite element model/ ocean current/ friction coefficient/ stress/ deformation分类
能源科技引用本文复制引用
伦冠德,刘衍聪,伊鹏,李成凯,马晓丽,曲杨..海流及海床摩擦对油气管道提吊及沉放影响分析[J].石油勘探与开发,2013,40(1):111-116,6.基金项目
国家高科技研究发展规划(863)项目"南海深水油气勘探开发关键技术及装备"(2006AA09A104) （863）
