This article presents based on a mathematical model of a one- and two-dimensional problem of a two-phase non-stationary filtration process in an oil and gas system, a boundary value problem is constructed, numerical modeling is carried out, and algorithms for calculating the main filtration indicators are developed. The developed numerical models and computational algorithms made it possible to create a program for calculating one- and two-layer two-phase non-stationary filtration processes, as well as to calculate the main indicators of gas field development. The pressure distribution in gas layers is analyzed numerically and graphically. The computational experiments carried out showed the validity of the created computational algorithms. As a result, it became possible to visualize the results obtained on 2D and 3D graphics.
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