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首页> 外文会议>International Symposium of the Society of Core Analysts >A MULTI-SCALE,IMAGE-BASED PORE NETWORK MODELING APPROACH TO SIMULATE TWO-PHASE FLOW IN HETEROGENEOUS ROCKS
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A MULTI-SCALE,IMAGE-BASED PORE NETWORK MODELING APPROACH TO SIMULATE TWO-PHASE FLOW IN HETEROGENEOUS ROCKS

机译：基于多种图像的孔隙网络建模方法，用于模拟异构岩石中的两相流

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Despite the large interest in the multi-phase flow properties of rocks with broad pore size distributions,most digital rock physics approaches struggle with the presence of multiple pore scales. In this work,we present a method to estimate relative permeability(Kr)and resistivity index(RI)curves of such heterogeneous rocks during drainage. In our dual pore network model(DPNM),macropores are represented as pores and throats,while unresolved microporosity is treated as a continuous porous medium. The scales are coupled by including microporosity as symbolic network elements in the DPNM,based on 3D image analysis. The validity of the method is investigated by treating two carbonate rocks(Estaillades and Savonnieres limestone). We present a sensitivity analysis of the drainage behaviour of these networks on the microporosity’s petrophysical properties,which are provided as input. While a number of challenges persist,the presented examples show how DPNM can help increase the understanding of two-phase flow in complex carbonate rocks.
机译：尽管对具有宽孔径分布的岩石的多相流动性质的兴趣很大，但大多数数字岩石物理学接近多个孔鳞的存在。在这项工作中，我们介绍了一种方法来估计在引流期间这种异质岩石的相对渗透率（KR）和电阻率指数（RI）曲线。在我们的双孔网模型（DPNM）中，宏观团表示为孔和喉部，而未解决的微孔率被视为连续多孔介质。基于3D图像分析，通过包括DPNM中的符号网络元素的微孔度，尺度耦合。通过治疗两种碳酸盐岩石（estaillades和Svonnieres石灰石）来研究该方法的有效性。我们对这些网络的排水行为呈现在微孔的岩石物理特性上的敏感性分析，其作为输入提供。虽然一些挑战持续存在，但呈现的例子显示DPNM如何帮助增加复杂碳酸盐岩中两相流的理解。

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