A numerical finite element model of the near-wellbore zone has been developed considering the geometric parameters of cumulative perforation holes. Multivariate calculations of an inhomogeneous stress field were carried out for the conditions of Tournaisian-Famennian limestone reservoirs in the south of the Perm Region after creation of perforation channels when creating various pressure drawdowns. The stress state of the reservoir near the well was analyzed and the sites of decrease and increase of the average effective stresses near the perforation openings were identified. Based on the Mohr – Coulomb criterion, the conditions of the destruction zones occurrence near the perforation interval are determined.
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