摘要
海上铺设柔性管缆是海洋油气开采技术的重要环节之一,而能够准确评估管缆铺设参数以确定作业天气窗口是其关键问题。基于集中质量法,分别从模型建立条件、模型数据输入、作业接受标准、施工作业参数等方面考虑,明确柔性管缆铺设分析施工参数,建立简化的正常铺设分析模型和分析方法,并以工程项目为实例,进行layback敏感性、轴向压力、最大作业海洋环境等分析。根据作业接受标准确定合适的作业天气窗口为2.5m有义波高、30°浪向内。分析表明:选取合适的layback有利于海上施工作业;实际施工中应避免出现轴向压力;对于浅水电缆铺设,最小弯曲半径是决定海上最大作业海况的主要限制条件。
Installation of flexible lines, such as pipe, for exploring oil and gas, and the key issue is how to cable and umbilical, is an important part of offshore operation assess the installation parameters accurately and determine the weather window. A simplified model and the corresponding analysis method for normal laying of flexible line are pres- ented based on lumped mass method with the considerations for the modeling, the input data of the analysis, the ac- ceptance criteria of the operation and the important parameters used in the operation. Taking a cable installation pro- ject as an example, the sensitivity analysis for the layback, the analysis of the axial compression, and the determina- tion of the maximum environmental condition for the operation are performed. The proper weather window is 2.5 m significant wave height and 30° wave direction. The results show that selecting a proper layback is good for offshore operation） it is suggested to avoid the axial compression） for laying cable in shallow water, minimum bending radius （MBR） is the main limiting criterion to decide the maximum allowable environment condition.
出处
《海洋工程装备与技术》
2016年第2期129-134,共6页
Ocean Engineering Equipment and Technology
