ABSTRACT

Experimental tests are an important source of information for the design of floating production systems. Worldwide, there are few ocean basins with capabilities to reproduce ultra-deep-water scenarios, and they are characterised by having large dimensions. Even so, an equivalent truncated mooring/riser system has to be used. It is a technological challenge to reproduce with a truncated mooring system the coupled static responses for a semisubmersible considering the complete offset range. In this work, a methodology and computational tool based on a genetic algorithm is applied to optimise the design of a truncated equivalent mooring system in terms of the static responses. The prototype system is a semisubmersible platform for 2000 m water depth. The ocean basins considered in this study are OTRC, MARIN, MARINTEK and LABOCEANO. Results are satisfactory for every ocean basin studied which means that the methodology and computational tool applied is robust and efficient for different deep-water experimental design scenario.

摘要

实验测试是浮式生产系统设计的重要信息来源。在世界范围内，能够再现超深水情景的海洋盆地很少，而且它们的特点是尺寸大。即便如此，也必须使用等效的截断系泊/立管系统。考虑到完整的偏移范围，使用截断系泊系统重现半潜式的耦合静态响应是一项技术挑战。在这项工作中，应用基于遗传算法的方法和计算工具来优化截断等效系泊系统的静态响应设计。原型系统是一个水深 2000 米的半潜式平台。本研究中考虑的海洋盆地是 OTRC、MARIN、MARINTEK 和 LABOCEANO。