摘要
针对管道倾斜角度、滑脱及负摩阻压降等因素对环空管的流型和压降计算具有一定影响,沿用垂直环空管道压降计算公式误差较大的问题,以水和空气为实验介质,对不同倾斜角度下同心环空管气液两相流动规律进行了理论和实验研究。对实验流型变化规律进行了观察,并在环空段塞流水动力模型的基础上,考虑气液滑脱及负摩阻压降的影响,建立了新的环空段塞流压降计算方程。结合实验数据对文献中的压降预测模型进行误差对比,结果表明,所提模型可以更准确地计算倾斜环空管气液两相流的压降,模型准确性较高。
With the development of the gas-liquid two-phase flow in annulus pipelines widely used in petroleum.Research on annulus often involves more vertical and horizontal pipes and less research on inclined pipes.Due to the factors such as the inclination angle of the pipeline,slippage and negative frictional pressure drop,which have certain effects on the calculation of the flow pattern and pressure drop of the annulus pipe,the calculation formula of the vertical annulus pipe pressure drop has a large error.Therefore,this paper uses water and air as experimental media to conduct theoretical and experimental research on the gas-liquid two-phase flow of concentric annulus tubes at inclined angles.Based on the hydrodynamic model of annulus slug flow,the effects of gas-liquid slippage and negative friction pressure drop were established.A new equation for calculating the pressure drop of annulus slug flow and combining experimental data with others’pressure drop prediction models.The results show that the pressure drop of gas-liquid two-phase flow in inclined annulus can be calculated more accurately by using the model in this paper,and the model is more accurate.
作者
刘羽珊
白晓弘
程阳
王晓荣
宋汉华
廖锐全
LIU Yushan;BAI Xiaohong;CHENG Yang;WANG Xiaorong;SONG Hanhua;LIAO Ruiquan(School of Petroleum Engineering, Yangtze University, Wuhan 430100, China;Oil and Gas Technology Research Institute of Changqing Oilfield Company, Xi’an 710021, China;National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas Fields, Xi’an 710021, China;Laboratoryof Multiphase Pipe Flow, Gas Lift Innovation Center of CNPC, Wuhan 430100, China)
出处
《中国科技论文》
CAS
北大核心
2020年第9期1090-1098,共9页
China Sciencepaper
基金
国家自然科学基金资助项目(61572084)
国家科技重大专项(2017ZX05030-005)
海外油气田开发关键技术研究与应用(2019D-4413)。
关键词
环空气液两相流
压降
流型
负摩阻压降
气液滑脱
annular gas-liquid two-phase flow
pressure drop
flow pattern
negative friction pressure drop
gas-liquid slippage
