南海深水钻井平台锚泊系统预张力优选研究  

Optimization on Mooring Pretention of Deepwater Drilling Platform in South China Sea

作　　者：郑纯亮[1] 陈国明[1] 张浩[1] 罗宁[1] 刘正礼 

机构地区：[1]中国石油大学(华东)海洋油气装备与安全技术研究中心,山东青岛266580 [2]中海石油(中国)有限公司深圳分公司,广东深圳518067

出　　处：《中国海洋平台》2016年第6期91-98,共8页China offshore Platform

摘　　要：根据不同工况对锚泊系统的不同要求,确定锚泊系统性能优化的设计变量、优化目标和约束条件等。以南海某深水半潜式钻井平台为例,采用ANSYS-AQWA软件建立平台-锚泊系统动力耦合分析模型,根据现场环境载荷划分工况,并采用AQWA-DRIFT模块进行时域分析,得到各个方向上平台的最大漂移量、平均漂移量及系泊线最小安全系数等结果。基于作业工况安全作业窗口最大的优化要求,以及现场对平台漂移量和系泊线安全性能要求的优先级顺序,确定作业工况下的最优预张力范围;选取某极限工况,基于极限工况系泊线安全系数最大的优化要求,确定极限工况最优预张力范围。In order to provide the reference to mooring opreration for deepwater drilling,optimization method on mooring pretention under different operation condition is presened in this paper.Firstly,according to different demands on mooring system under different operation condition,mooring system optimization demands are determined,including design variables,optimization objective and constraints.Secondly,taking a deepwater semi-submersible drilling platform in South China Sea as example,coupled dynamic analysis model of platformmooring system is established using the software ANSYS-AQWA,operation conditions are divided according to environment data on site,and time domain method is adopted using AQWA-DRIFT module,which result in maximum platform offsets,mean platform offsets and minimum mooring line safety factors at different environment direction.Thirdly,based on the optimization demand that safety operation window should be maximized and different priority demand on platform offset and mooring line safety performance on site,the optimum pretension scope under operation condition is determined.Taking a survival condition as example,based on the optimization demand that safety factors of mooring lines should be maximized,the optimum pretension scope under this survival condition is determined.

关 键 词：锚泊系统 优化要求 工况 预张力 优选 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]