垂直管中气-水-泡沫三相管流空隙率实验研究  

Experimental Study on Void Fraction of Gas-Water-Foam Three Phase Flow in Vertical Pipe

作　　者：袁辉 石书强 苏薇 戚志林[2] 严文德[2] 黄小亮[2] 万小进 YUAN Hui;SHI Shu-qiang;SU Wei;QI Zhi-lin;YAN Wen-de;HUANG Xiao-liang;WAN Xiao-jin(Zhanjiang Branch of CNOOC (China) Co., Ltd., Zhanjiang 524000, China;Chongqing University of Science and Technology, Petroleum Engineering School, Chongqing 401331, China;Petroleum Engineering School, China University of Petroleum (Beijing), Beijing 102249, China)

机构地区：[1]中海油(中国)有限公司湛江分公司,湛江524000 [2]重庆科技学院石油与天然气工程学院,重庆401331 [3]中国石油大学(北京)石油工程学院,北京102249

出　　处：《科学技术与工程》2022年第1期148-156,共9页Science Technology and Engineering

基　　金：重庆市教委科学技术研究项目-青年项目(KJQN202101542)。

摘　　要：空隙率是计算气-水-泡沫三相管流压力、温度的重要参数,准确预测气井中气-水-泡沫三相管流空隙率对泡沫排水采气工艺技术的高效实施及方案优化至关重要。目前关于气-水两相管流空隙率模型研究较多,而气-水-泡沫空隙率研究相对薄弱。因此通过开展气-水-泡沫三相空隙率测量实验,研究了泡排剂浓度、气量、液量对空隙率大小的影响规律。基于漂移模型,考虑泡排剂浓度、气液表观流速、密度、滑脱速度等参数,建立了适用于垂直管的气-水-泡沫三相管流空隙率模型,并分别利用145组实验数据和602组文献数据验证了模型的准确度。结果表明,预测实验数据时平均相对误差为2.24%,平均绝对误差为2.47%;预测文献时平均相对误差为-4.65%,平均绝对误差为6.21%;证明新模型计算精度较高,可满足工程需求。新模型可为泡沫排水采气工艺技术的高效实施和方案优化提供理论指导。The void fraction is an important parameter for predicting the pressure and temperature of gas-water-foam three phase pipe flow. Accurate prediction void fraction of gas-water-foam three phase pipe flow is very important for efficient implementation and optimization of foam drainage gas recovery. Studies on void fraction have focused primarily on gas-water pipe flows, while gas-water-foam pipe flows have neglected. A detailed experimental analysis of the void fraction of the gas-water-foam pipe flows in a vertical upward pipe was conducted. The effect of foam agent concentration, gas velocity, and liquid velocity on void fraction was studied. In addition, a new void fraction model that takes into consideration the foam agent concentration, gas velocity, liquid velocity, density and drift velocity was established based on the drift flux model. To assess the reliability of the new model, 145 experimental data points and 602 groups of literature data were used to verify the accuracy of the model. The results show that when the new model is used for predicting void fraction of experimental data points, the average relative error is 2.24%, and the average absolute error is 2.47%. The average absolute error is-4.65%, the mean absolute error is 6.21% when it is used for published article data points, which proves that the new model has high calculation accuracy and can meet the engineering needs. The new model can provide theoretical guidance for the efficient implementation and optimization of the technology of foam drainage gas recovery.

关 键 词：气-水-泡沫三相管流 空隙率 漂移模型 泡沫排水采气 

分 类 号：TE371.12[石油与天然气工程—油气田开发工程]