考虑管径因素的中高流速气液两相倾斜管流持液率新模型  

New Liquid Holdup Model of Gas-Liquid Two-Phase Inclined Pipe Flow at Medium and High Flow Rates Considering Pipe Diameter

作　　者：陈雯 罗威[1,2,3] 王伟[4] 周东慧 侯耀东 CHEN Wen;LUO Wei;WANG Wei;ZHOU Dong-hui;HOU Yao-dong(School of Petroleum Engineering,Yangtze University,Wuhan 430100,China;Laboratory of Multiphase Pipe Flow of CNPC Gas Lift Innovation Center,Wuhan 430100,China;Hubei Key Laboratory of Drilling and Production Engineering for Oil and Gas(Yangtze University),Wuhan 430100,China;Institute of Engineering Technology of CNPC,Tuha Oilfield,Hami 839009,China)

机构地区：[1]长江大学石油工程学院,武汉430100 [2]中国石油天然气集团公司气举试验基地多相流研究室,武汉430100 [3]油气钻采工程湖北省重点实验室(长江大学),武汉430100 [4]中石油吐哈油田工程技术研究院,哈密839009

出　　处：《科学技术与工程》2024年第31期13359-13367,共9页Science Technology and Engineering

基　　金：国家自然科学基金(62173049);中国石化页岩油气勘探开发重点实验室开放基金(33550000-22-ZC0613-0220)。

摘　　要：为准确得到高流速下倾斜管气液两相管流的持液率,以空气和水为实验介质,设置气量180~2000 m^(3)/h,液量2~20 m^(3)/h,在内径60 mm、长9.5 m的测试管内进行了常压条件下倾斜管高气液两相流实验。实验范围内主要流型是段塞流和环状流,将实验流型绘制到现有流型图中,对比多种流型图发现Mukherjee-Brill、Kaya和Chokshi流型图适用于实验流型的判别。进一步通过实验数据对常用的持液率预测模型进行检验,对比发现Mukherjee-Brill模型相对准确,但误差接近20%,仍然较大。鉴于此,统计国内外高气液流速条件下不同压力、温度、管道直径、管道倾角等参数的文献实验数据,分析总结持液率的影响因素,选择液相黏度准数、管径准数、气相速度准数、液相速度准数、压力准数和倾斜角作为比较序列,持液率作为参考序列,通过灰色关联度分析方法确定管径准数对持液率存在较大影响,从而优化Mukherjee-Brill模型,建立考虑管径影响因素的新持液率计算模型。通过文献实验和本实验高气液流速下包含25.2~95.3 mm共14种管径的数据对新模型进行检验验证,新模型平均绝对百分比误差为6.85%,较现有5种持液率模型至少减少4.96%。In order to accurately obtain the liquid holdup of the inclined tube gas-liquid two-phase flow at high flow rate,air and water were used as experimental media,the gas volume was set to 180~2000 m^(3)/h,and the liquid volume was set to 2~20 m^(3)/h.The experiment of the inclined tube high-gas-liquid two-phase flow at normal pressure was carried out in a test tube with an inner diameter of 60 mm and a length of 9.5 m.The main flow patterns in the experimental range are slug flow and annular flow.The experimental flow patterns are drawn into the existing flow patterns,and the Mukherjee-Brill,Kaya and Chokshi flow patterns are found to be suitable for the identification of experimental flow patterns by comparing various flow patterns.The experimental data are further used to test the common liquid holdup prediction model and it is found that the Mukherjee-Brill model is relatively accurate,but the error is close to 20%,which is still large.In view of this,the literature and experimental data of different parameters such as pressure,temperature,pipe diameter and inclination angle under high gas-liquid flow rate at home and abroad are collected to analyze and summarize the influencing factors of liquid holdup.Liquid viscosity,pipe diameter,gas phase velocity,liquid phase velocity,pressure and inclination angle are selected as the comparison sequence and liquid holdup as the reference sequence.The gray correlation degree analysis method determined that the diameter of pipe had a great influence on liquid holdup,so the Mukherjee-Brill liquid holdup model is optimized,and a new liquid holdup calculation model is established considering the influence factors of pipe diameter.The new model is verified by the data of 14 different pipe diameters,including 25.2~95.3 mm,at high gas-liquid flow rates in the literature experiment and this experiment.The average absolute percentage error of the new model is 6.85%,which is at least 4.96%less than that of the existing five liquid holdup models.

关 键 词：持液率 Mukherjee-Brill模型 气液两相流 倾斜管 流型 

分 类 号：TE832[石油与天然气工程—油气储运工程]