Theoretical substantiation and lab tests of the method for synthesis of a relationship describing angular anisotropy of the effective permeability in borehole environment based on the inverse coefficient problem solution in terms of the data on percolation tests of regularly non-uniform cylindrical specimens with a central hole are set forth in the paper. With a view to provide the algorithmic support of GIS data inversion in the course of determination of poroperm properties of production intervals the researchers developed and implemented by the hybrid numerical method to realize the multiphysical model of the evolution of geomechanical and electrohydrodynamic fields under filtration of multiphase fluid in the borehole environment with consideration for anisotropy of permeability induced by difference in components of the external stress fields. The numerical experiments enabled to establish that in the overbalanced drilling the configuration of invaded zone depends on the proportion between horizontal stress components outside of the well influence zone.
