摘要
高压CO_(2)管道运行过程中可能因为腐蚀或外部因素发生泄漏,由于CO_(2)相态复杂,管内压力相应产生复杂动态响应变化,管内压力动态变化规律对于减压波预测、管材韧性止裂具有重要影响。为研究不同工况下管道泄漏过程中管内压力变化特性,基于等熵原理建立了高压CO_(2)管道泄漏管内动态压力计算模型,并结合工业规模CO_(2)管道泄漏实验数据以及HYSYS软件计算结果对模型进行了验证。结果表明:相比HYSYS软件,新建模型对于高压CO_(2)管道泄漏过程压降的预测与实验结果更吻合,平均预测误差为3.9%,表明新建模型可以准确预测高压CO_(2)管道泄漏过程管内压力的动态响应变化规律。研究成果可为高压CO_(2)管道泄漏过程管内动态减压特征预测提供理论支撑。
During the operation of high-pressure CO_(2)pipeline,leakage may occur due to factors such as corrosion or external damages.The complex phase state of CO_(2)makes the pipeline's pressure dynamic response particularly intricate.Understanding the dynamic change pattern of pressure within the pipeline is crucial for predicting decompression waves and arresting crack propagation due to the pipe's ductility.Based on the isentropic principle,a dynamic pressure calculation model for high-pressure CO_(2)pipeline leakage was developed and presented in this paper.The model was designed to study the pressure variation characteristics in the pipeline during pipeline leakage under different working conditions.To validate the model,it was tested against experimental data from industrial-scale CO_(2)pipeline leaks and the computational results from HYSYS software.The results show that,the prediction of pressure drop in high-pressure CO_(2)pipeline leakage process is more consistent with the experimental results compared with those from HYSYS software,with average prediction accuracy staying 3.9%error.This indicates that the model can accurately predict the dynamic pressure response in high-pressure CO_(2)pipeline leakage event.The research results can provide theoretical support for the prediction of dynamic decompression characteristics in the event of CO_(2)pipeline leakage.
作者
朱海山
王海锋
柳歆
路建鑫
胡其会
李玉星
朱建鲁
殷布泽
列斯别克·塔拉甫别克
ZHU Haishan;WANG Haifeng;LIU Xin;LU Jianxin;HU Qihui;LI Yuxing;ZHU Jianlu;YIN Buze;Liesibieke·TALAFUBIEKE(CNOOC Research Institute Co.,Ltd.,Beijing,100028,China;CNOOC(Tianjin)Pipeline Engineering Technology Co.,Ltd.//Tianjin Enterprise Key Laboratory of Subsea Pipeline//Cener Tech Key Laboratory of Subsea Pipeline Safety Service and Guarantee Technology,Tianjin,300452,China;College of Pipeline and Civil Engineering,China University of Petroleum(East China)//Shandong Key Laboratory of Oil&Gas Storage and Transportation Safety,Qingdao,Shandong,266580,China)
出处
《天然气与石油》
2024年第1期25-30,共6页
Natural Gas and Oil
基金
中海石油(中国)有限公司“十四五”科技项目“海上CCUS上下游一体化技术研究”课题(KJGG-2022-12-CCUS-0103)。
