摘要
针对目前盐穴储气库建槽周期长且槽体结构不稳定等问题,设计了盐穴储气库溶腔促溶工具,并对其关键结构参数开展优化研究。基于盐穴储气库溶腔促溶工具的工作原理,构建了工具内部流场域的三维模型,利用Fluent软件进行了仿真分析,并设计了相应的室内试验方案,系统研究了入口排量、高压软管连接处圆角大小与工具压降之间的关系。研究结果表明:随着入口排量的增大,压降的增长速度呈现二次函数增长规律;圆角大小对压降的影响受到入口排量的调控,在入口排量大于10 L/s时尤为显著;增大圆角可有效降低压降,且压降的下降速率随圆角增大而趋于平缓,当圆角超过10 mm后改善效果不再明显,故确定高压软管连接区域的最佳圆角大小为10 mm。研究结果可为盐穴储气库溶腔促溶工具的结构优化提供理论依据与试验支持。
To address the issues of slow construction speed and unstable cavity structure in existing salt cavern gas storages,a dissolution promoting tool for salt cavern gas storage cavity was designed,and optimization research was conducted on its key structural parameters.Based on the working principle of dissolution promoting tool for salt cavern gas storage cavity,a 3D model of internal flow field of the tool was constructed.Simulation analysis was conducted using Fluent software,and a corresponding laboratory test scheme was designed to systematically study the relationship between the inlet flow rate,the fillet size at the connection of the high-pressure hose,and the pressure drop of the tool.The research results show that as the inlet flow rate increases,the increase rate of pressure drop follows a quadratic function increase law.The influence of fillet size on pressure drop is controlled by inlet flow rate,which becomes particularly significant when the inlet flow rate is greater than 10 L/s.Increasing the fillet can effectively reduce pressure drop,and the decrease rate of pressure drop tends to be gentle as the fillet increases.When the fillet exceeds 10 mm,the improvement effect is no longer significant.Therefore,the optimal fillet size for the high-pressure hose connection area is determined as 10 mm.The research results provide a theoretical basis and experimental support for the structural optimization of dissolution promoting tool for salt cavern gas storage cavities.
作者
郭庆丰
柳贡慧
赵金成
陈杰
陈立伟
查春青
庞瑞豪
Guo Qingfeng;Liu Gonghui;Zhao Jincheng;Chen Jie;Chen Liwei;Zha Chunqing;Pang Ruihao(College of Petroleum Engineering,China University of Petroleum(Beijing);School of Mechanical&Energy Engineering,Beijing University of Technology;CNOOC EnerTech-Drilling&Production Co.)
出处
《石油机械》
北大核心
2025年第12期25-31,共7页
China Petroleum Machinery
基金
国家自然科学基金联合基金项目“特深井复杂温压场测量与井筒压力剖面控制基础研究”(U22B2072)。
关键词
盐穴储气库
促溶工具
流场仿真
水力损失
参数优化
入口排量
圆角
salt cavern gas storage
dissolution promoting tool
flow field simulation
hydraulic loss
parametric optimization
inlet flow rate
fillet
