顶张力作用下东海高压立管稳定性分析  

Stability analysis of high-pressure riser under different top tensions in the East China Sea

作　　者：李艳飞 黄召 田继宏 葛俊瑞 姜玉峰 贾昆 马烨璇 LI Yanfei;HUANG Zhao;TIAN Jihong;GE Junrui;JIANG Yufeng;JIA Kun;MA Yexuan(Engineering&Technology Center,China National Offshore Oil Corporation Shanghai Branch,Shanghai 200335,China;Shanghai Drilling&Producing Branch,China National Offshore Oil Corporation Ener Tech,Shanghai 200335,China;State Key Laboratory,Hydraulic Engineering Intelligent Construction and Operation,Tianjin University,Tianjin 300072,China;Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中海石油(中国)有限公司上海分公司工程技术中心,上海200335 [2]中海油能源发展股份有限公司上海工程技术分公司,上海200335 [3]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 [4]中国科学院力学研究所,北京100190

出　　处：《应用科技》2025年第1期28-33,共6页Applied Science and Technology

基　　金：国家自然科学基金项目(52301352).

摘　　要：东海地质条件复杂,采用常规导管架模式进行油气资源开发经济风险较大。针对浅水区水下生产系统的部署,使用高压立管将会大大降低油气开发成本。本文采用有限元计算方法,对东海海域高压立管及水下井口系统的响应情况进行分析。研究主要关注系统在不同顶张力、高压立管壁厚、内压条件下的响应变化,判断结构能否满足安全要求。结果表明,增大顶张力有助于提高结构稳定性,但在生存工况下,提高顶张力的作用有限;顶张力增大后壁厚对响应的影响逐渐减弱,表明顶张力对高压立管整体刚度的贡献高于高压立管自身弯曲刚度的贡献;正常作业的内压工况下,能够通过提高顶张力的方式提供结构安全性,但在井喷的极高内压工况下,提高顶张力产生的作用有限,增大高压立管壁厚更为有效。The geological conditions in the East China Sea are complex,and the economic risks of using conventional jacket models for oil and gas resource development are relatively high.For the deployment of underwater production systems in shallow waters,the use of high-pressure risers will greatly reduce oil and gas development costs.In this paper,the finite element calculation method is used to analyze the response of the high-pressure riser and the underwater wellhead system in the East China Sea.To determine whether the structure can meet operation requirements,the research mainly focuses on the response change of the system under different top tension,high-pressure riser wall thickness,and internal pressure conditions.The increase of top tension is beneficial to improving stability of the structure,but the effect of increasing top tension is limited under survival conditions.With the increase of tension,the influence of wall thickness on the response decreases gradually,indicating that the contribution of tension to the overall stiffness of the high-pressure riser is higher than that of the bending stiffness of high-pressure riser.It can improve structural safety by increasing tension under normal internal pressure conditions.However,under the condition of extremely high internal pressure of blowout,the effect of increasing top tension is limited,and increasing the wall thickness of high pressure riser is more effective.

关 键 词：高压立管 水下井口 顶张力 有限元模拟 静力学分析 波流联合 稳定性分析 应力校核 

分 类 号：TV312[水利工程—水工结构工程]