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  • Open Access


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

    Mingjun Du1,2, Jiaqiang Jing1,*, Xinqiang Xiong3, Bingbing Lang2, Xuan Wang2, Shiying Shi4,*

    FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.1, pp. 81-91, 2022, DOI:10.32604/fdmp.2022.016640

    Abstract 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 reduced. Dedicated experiments have been carried out by changing the phase’s density, viscosity, velocity and interfacial tension to systematically analyze the characteristics of the water ring. On the basis of such experimental data, a mathematical model for pressure drop prediction has been introduced. This research shows that as long as the density of oil and water remains the same, a concentric water ring can effectively be formed. In such conditions, the oil-water More >

  • Open Access


    A Pressure-Drop Model for Oil-Gas Two-Phase Flow in Horizontal Pipes

    Xinke Yang1, Shanzhi Shi1, Hui Zhang1, Yuzhe Yang2,3, Zilong Liu2,3, Ruiquan Liao2,3,*, Joseph X. F. Ribeiro4

    FDMP-Fluid Dynamics & Materials Processing, Vol.17, No.2, pp. 371-383, 2021, DOI:10.32604/fdmp.2021.011486

    Abstract The accurate prediction of the pressure distribution of highly viscous fluids in wellbores and pipelines is of great significance for heavy oil production and transportation. The flow behavior of high-viscosity fluids is quite different with respect to that of low-viscosity fluids. Currently, the performances of existing pressure-drop models seem to be relatively limited when they are applied to high-viscosity fluids. In this study, a gas-liquid two-phase flow experiment has been carried out using a 60 mm ID horizontal pipe with air and white oil. The experimental results indicate that viscosity exerts a significant influence on More >

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