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首页> 外文期刊>Journal of natural gas science and engineering >Influence of pore structure parameters on flow characteristics based on a digital rock and the pore network model
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Influence of pore structure parameters on flow characteristics based on a digital rock and the pore network model

机译：基于数字岩石和孔隙网络模型的孔隙结构参数对流动特性的影响

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Many approaches have been developed to study the role that pore structure parameters play in flow characteristics. In this paper, regular network models are used to study the influence of the porosity, particle size, pore throat ratio, coordination number, shape factor and pore throat orientation on the absolute permeability. Among them, every parameter has obvious effect except shape factor when single-phase fluid flows in the models. Then the random pore network model is developed to analyze the relative permeability curve with a changing pore throat ratio, coordination number and shape factor. When the water saturation is constant, the oil relative permeability is higher for models that have a higher coordination number or have a lower pore throat ratio, and the wet phase has low permeability because of the corners. In order to study the dominant factor of the pore structure for two-phase flow further, a digital core, based on CT scanning, is constructed to firstly research the capillary influence of internal structure that determines whether the fluid can flow at a certain pressure difference. (C) 2016 Elsevier B.V. All rights reserved.
机译：已经开发出许多方法来研究孔结构参数在流动特性中的作用。本文使用常规网络模型研究孔隙度，粒径，孔喉比，配位数，形状因子和孔喉取向对绝对渗透率的影响。其中，当单相流体在模型中流动时，除形状因子外，每个参数都有明显的影响。然后建立随机孔隙网络模型，以分析孔隙率，配位数和形状因子变化的相对渗透率曲线。当水饱和度恒定时，对于具有较高配位数或具有较低孔喉比的模型，油的相对渗透率会更高，并且由于存在角，湿相的渗透率会降低。为了进一步研究两相流孔结构的主导因素，构造了基于CT扫描的数字岩心，首先研究内部结构的毛细影响，该影响决定了流体是否可以在一定的压差下流动。 。 （C）2016 Elsevier B.V.保留所有权利。

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