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Simulation of 2D Nonlinear Manifestations in a Layered-Block Medium with Hierarchical Inclusions

Open Journal of Geology 2020年第11期10卷 1040-1046页

作者： Olga Hachay Andrey Khachay Institute of Geophysics Ural Branch of Russian Academy of Sciences Yekaterinburg Russian Federation Ural Federal University Yekaterinburg Russian Federation

The geological environment is an open system that can be influenced by external and internal factors. They can lead it to an unstable state, which, as a rule, manifests itself locally in the form of zones called dynamically active elements, by which it is possible to identify, on the one hand, potential catastrophic sources that disrupt the technological process when mining the rock massif;оn the other hand, when producing oil from wells, this process can contribute to improving the movement of oil inclusions in the plastic environment of the reservoir. These objects, both in the rock massif and in the oil reservoir, differ from the host geological environment in their structural forms, which are often hierarchical forms. The process of their nonlinear activation can be observed using borehole monitoring of acoustic longitudinal and transversal waves, for the mathematical support of which new 2D modeling algorithms have been developed in that paper using the method of integral and integro-differential equations with the inclusion of nonlinear terms in the dependence of the wave parameter on frequency. When interpreting the results of acoustic monitoring, it is necessary to use the data of such observation systems that are configured to study the hierarchical structure of the environment.

关键词： new algorithms Nonlinear Terms Hierarchical Inclusions Acoustic Waves

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