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A pressure-drop model for Oil-Gas Two-Phase Flow in Horizontal Pipes

Fluid Dynamics & Materials Processing 2021年第2期17卷 371-383页

作者： Xinke Yang Shanzhi Shi Hui Zhang Yuzhe Yang Zilong Liu Ruiquan Liao Joseph X.F.Ribeiro Engineer Technology Research Institute of Xinjiang Oilfield Company Karamay834000China School of Petroleum Engineering Yangtze UniversityWuhan430100China Laboratory of Multiphase Pipe Flow of Gas Lift Innovation Center CNPC(Yangtze University)Wuhan430100China Kumasi Technical University KumasiGhana

The accurate prediction of the pressure distribution of highly viscous fluids in wellbores and pipelines is of great significance for heavy oil production and *** flow behavior of high-viscosity fluids is quite different with respect to that of low-viscosity ***,the performances of existing pressure-drop models seem to be relatively limited when they are applied to high-viscosity *** this study,a gas-liquid two-phase flow experiment has been carried out using a 60 mm ID horizontal pipe with air and white *** experimental results indicate that viscosity exerts a significant influence on the liquid holdup and pressure *** the same gas and liquid volume,both the liquid holdup and pressure drop increase with an increase in the *** two existing models,a modified pressure drop method is developed,which is applicable to horizontal pipes for different viscosities and does not depend on the flow *** new method displays a high accuracy in predicting the new experimental data presented here and other published data in literature.

关键词： Horizontal pipe different viscosities pressure drop model gas-liquid two-phase flow

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Experimental Study on Heavy Oil Drag Reduction in Horizontal Pipelines by Water Annular Conveying

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Fluid Dynamics & Materials Processing 2022年第1期18卷 81-91页

作者： Mingjun Du Jiaqiang Jing Xinqiang Xiong Bingbing Lang Xuan Wang Shiying Shi State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu610500China China Petroleum Engineering&Construction Corp North Company Renqiu062552China China National Petroleum Corporation Beijing100000China Institute of Mechanics Chinese Academy of ScienceBeijing100190China

Transportation of heavy oil by the so-called water-ring technique is a very promising method by which pressure drop and pollution can be significantly *** experiments have been carried out by changing the phase’s density,viscosity,velocity and interfacial tension to systematically analyze the characteristics of the water *** the basis of such experimental data,a mathematical model for pressure drop prediction has been *** research shows that as long as the density of oil and water remains the same,a concentric water ring can effectively be *** such conditions,the oil-water viscosity difference has little effect on the shape of water ring,and it only affects the pressure *** greater the viscosity of heavy oil,the smaller the pressure drop of the oil-water ring transportation *** influence of phases’interfacial tension on the characteristics and pressure drop of the heavy oil-water ring can be considered *** pressure drop prediction model introduced on the basis of the Buckingham’s principle provides values in good agreement(95%)with the experimental data.

关键词： Heavy oil oil-water ring boundary layer experiment pressure drop model

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