南海冬季耐腐蚀合金海管铺设作业实例分析

Case Study of CRA Subsea Pipeline Laying in South China Sea in Winter

近年来,耐腐蚀合金(CRA)海管以其良好的内壁耐腐蚀性能和相对低廉的成本,在海洋石油输送、天然气输送、管线选材方面优势凸显,在国际上得到广泛应用。由于结构特殊,CRA海管施工效率较低。冬季在南海铺设CRA海管面临一定挑战和风险。现以南海某项目冬季铺设CRA海管为例,分析冬季恶劣海况对于铺设CRA海管的影响,并对施工期间现场遇到的主要问题给出了应对措施。

In recent years,CRA subsea pipelines have shown advantages in offshore oil transportation,natural gas transportation,and pipeline material selection due to their excellent corrosion resistance and relatively low cost.They are being widely adopted internationally.Due to the special structure,the construction efficiency of CRA subsea pipelines is low,and the laying of CRA subsea pipelines in the South China Sea in winter faces certain challenges and risks.Taking the CRA subsea pipeline laying in a project in the South China Sea as an example,the impact of harsh winter sea conditions in the South China Sea on the CRA subsea pipeline laying is analyzed,and suggestions on countermeasures are given for the main problems encountered during actual construction.