Digital Twin of Multiscale Geological Media: Faults, Fracture Corridors, Caves. Seismic simulation and imaging

The current level of development of numerical methods and high-performance computer systems opens way to obtain detailed information about the structure of geological objects using 3D seis-mic study. A universally recognized necessary component that ensures the successful develop-ment of modern high-tech technologies for acquiring, processing and interpreting geophysical data is the complete digital models of geological objects - their digital counterparts. It is on this basis that a detailed assessment of the resolution and information content of the proposed meth-ods and their comparison with the already known processing and interpretation algorithms using the example of a specific geological object becomes possible. In this paper the main efforts are paid to the construction of a realistic three-dimensional seismo-geological model containing a family of faults, as well as clusters of cavities and fracture corri-dors. After constructing such an inhomogeneous multi-scale model, we perform finite-difference numerical simulation of the formation and propagation of three-dimensional seismic wave fields. The data obtained are processed using the original procedures for extracting scattered / diffracted waves with the subsequent construction of images of the corresponding small-scale objects, which generate these waves. We perform the detailed analysis of the results obtained.