孔隙网络模型的可视化方法及应用

在微观渗流领域,孔隙网络模型的应用日渐广泛;但可视化成像方面研究的不足,使其应用受到极大的限制。基于四个基本假设,利用立体几何知识得到了喉道和孔隙体的确定方法。以孔隙网络模型数据文件为研究对象,将其应用于Berea砂岩的孔隙网络模型、复杂孔隙网络模型及孔隙网络模型中含油饱和度分布的可视化;由此将孔隙网络模型立体地呈现在人们面前。这样既可以展现同一个孔隙网络模型的孔隙体和喉道分布,又可以展现复杂孔隙网络模型的孔隙体和喉道分布,甚至还可以展现含油饱和度的分布状况,便于进行流动机理分析和微观剩余油分布分析,从而拓展了孔隙网络模型的应用范围。

Visualization and Applications of Pore Network Model

Pore network model is more and more widely used in the field of microscopic flow, but the lack of visualization greatly limits its application. In this paper, based on four basic assumptions, three-dimensional geometric knowledge is applied to determine the throat and pore body. Then, data files of pore network model are processed to achieve the visualization of Berea sandstone pore network model, complex pore network model and distribution of oil saturation. Thus, three-dimensional pore network model is presented. This method can show not only the distribution of the pore body and throat in one pore network model, but also the pore body and throat distribution of complex pore network model, and even the distribution of oil saturation. It facilitates the analysis of flow mechanism and microscopic remaining oil distribution, so as to expand the application range of pore network model.