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Transient Flow of a Compressible Fluid in a Connected Layered Permeable Medium

机译:连接层状渗透性介质中可压缩流体的瞬态流动

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摘要

We develop a semi-analytical model of transient fluid flow in a 2D layered permeable medium with cross-flow between adjacent layers. It is shown that the pressure satisfies a diffusion equation to leading order, even when the non-linear term and gravity are included in the mathematical model. The solution is based on an analytical expression in the transform domain for the fluid pressure in terms of interfacial flux functions; the algorithm to compute the flux functions accepts an arbitrary number of formation layers. We show some benchmark tests that validate the general model; the model is then applied to an example derived from experiments. Numerical experiments confirm the significance of the cross-flow in a particular scaling of the ratio of permeabilities and quantify the influence of the various physical parameters.
机译:我们开发了在二维分层渗透性介质中具有相邻层之间的交叉流动的瞬态流体流动的半分析模型。结果表明,即使在数学模型中包含了非线性项和重力,压力也满足了超前阶的扩散方程。该解决方案基于界面通量函数中流体压力的变换域中的解析表达式;计算通量函数的算法接受任意数量的地层。我们展示一些基准测试来验证通用模型;然后将该模型应用于从实验中得出的示例。数值实验证实了横流在渗透率的特定比例中的重要性,并量化了各种物理参数的影响。

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