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A CRITICAL REVIEW OF ENGINEERING APPROACH IN THE CONTEXT OF MEMORY CONCEPT FOR FLUID FLOW THROUGH POROUS MEDIA

Том 23, Выпуск 6, 2020, pp. 593-611
DOI: 10.1615/JPorMedia.2020020571
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In the conventional reservoir simulation approach, after the formulation of the mathematical model, we usually get a set of partial differential equations (PDEs) in space and time. Besides, the incorporation of the reservoir heterogeneity makes the entire modeling process more difficult, and the model equations become highly nonlinear. The solution of such equations numerically requires many approximations, which adds error and affects the fidelity of the solution. In order to avoid such approximations, researchers have been working on different modeling approaches. In this paper we review one such approach, namely, the engineering approach. The engineering approach bypasses PDE formulation in the conventional approach and leads to integrodifferential equations, which are easier to solve. A comparative study is also offered with the conventional approach in reservoir simulation. In the heterogeneous reservoir, there is always a continuous change in rock and fluid properties due to changes in pressure and temperature. This change in rock and fluid properties with time and space is known as memory. Dealing with reservoir heterogeneity and time-varying properties leads to nonlinearity in the system equations and is difficult to deal with using conventional approaches. In this study, we critically analyzed and presented its strengths in tackling the present challenges of reservoir simulation. Observation through this study shows that such a modeling approach is more straightforward, accurate, and transparent than the conventional approach. The outcome of this study will enhance the understanding of the need for revisiting the conventional reservoir simulation approach and offer a better option to handle current industry challenges in the area.

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