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Non-local diffusion models for fractured porous media with pressure tests applications
Advances in Water Resources ( IF 4.7 ) Pub Date : 2021-01-21 , DOI: 10.1016/j.advwatres.2021.103854
D. Hernández , E.C. Herrera-Hernández

In this work, different Generalized Double Porosity Models for anomalous fluid flow in fractured porous media are presented, and transient production decline applications discussed. The effects of subdiffusive and superdiffusive flows in fracture networks coupled to subdiffusive transport inside the matrix are explored, and some insights into how to identify these types of flow in geological formations like aquifers and oil fields, through transient production decline analysis are given. Additionally, we discuss different interpretations of the models parameters that allow, under the same analysis, to estimate the length scales of the system main heterogeneities. Moreover, we show that superdiffusive flow regimes could be a consequence of highly heterogeneous porous systems described by scale-free permeability distributions. Finally, we show that the use of non-local models of the type herein discussed, admit a novel way to construct effective single porosity models for the long time description of double porosity systems.



中文翻译:

具有压力测试应用的压裂多孔介质的非局部扩散模型

在这项工作中,针对裂隙多孔介质中异常流体的流动,提出了不同的广义双重孔隙度模型,并讨论了瞬时产量下降的应用。探讨了裂缝网络中亚扩散流和超扩散流与基质内部亚扩散运移相关的影响,并给出了一些有关如何通过瞬时产量下降分析来识别含水层和油田等地质构造中这类流的见解。另外,我们讨论了模型参数的不同解释,这些解释允许在相同的分析下估算系统主要异质性的长度尺度。此外,我们表明超扩散流态可能是由无标度渗透率分布描述的高度非均质多孔系统的结果。最后,

更新日期:2021-02-02
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