海洋移动式自安装平台井口支撑方案对比  

Comparison of offshore mobile self-installing platform wellhead support schemes

作　　者：王慧磊 朱本瑞[1] 杨成祥 崔希君 魏羲 WANG Huilei;ZHU Benrui;YANG Chengxiang;CUI Xijun;WEI Xi(State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation,Tianjin University,Tianjin 300072,China;Drilling Technology Research Institute,Sinopec Shengli Petroleum Engineering Co.,Ltd.,Dongying 257017,China)

机构地区：[1]天津大学水利工程智能建设与运维全国重点实验室,天津300072 [2]中石化胜利石油工程有限公司钻井工艺研究院,山东东营257017

出　　处：《海洋工程》2024年第5期78-86,共9页The Ocean Engineering

基　　金：国家自然科学基金资助项目(51509184)。

摘　　要：针对海洋移动式自安装平台,提出了隔水管外置框架支撑、内置框架支撑和张紧式支撑3种方案。采用有限元分析软件ANSYS,建立了对应的平台整体耦合分析模型,开展了平台结构模态和静力分析,进而对3种支撑方案下平台的整体性能进行了对比研究。结果表明:隔水管外置与内置两种框架支撑方案下平台的自振周期差异微乎其微,张紧式支撑会导致隔水管发生低阶振动;隔水管外置框架支撑方案在三者中综合性能表现最优,可作为海洋移动式自安装平台井口区的设计方案。This study proposes three support schemes for offshore mobile self-installing platforms:frame support with riser external installed(REI),frame support with riser internal installed(RII)and riser-tensioned support(RTS).Using finite element analysis software ANSYS,corresponding coupled analysis models of the platform were established to conduct modal and static analyses of the platform structure.A comparative study of the overall performance of the three support schemes was then conducted.Results indicate that the differences in natural vibration periods between the platforms with the REI and RII are negligible,while RTS leads to lowfrequency vibrations of the riser.The REI support scheme demonstrates the best overall performance among the three,making it a preferred design choice for the wellhead area of offshore mobile self-installing platforms.

关 键 词：海洋移动式平台 自安装平台 隔水管 支撑方案 自振周期 平台井口 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]