RESEARCH ON THE RELATIONSHIP BETWEEN GEOMECHANICAL ROCK CHARACTERISTICS AND THE EFFECTIVENESS OF HYDRAULIC FRACTURING

Abstract

The paper presents the results of comprehensive laboratory research of core samples taken from well 1 at depths of 850 and 950 m. The aim of the study was to establish a correlation between the geomechanical features of rocks and their effect on the stress-strain state of the massif during hydraulic fracturing. Acoustic studies, tests for uniaxial and triaxial compression were carried out to determine dynamic and static elastic-strength parameters, including Young's modulus, Poisson coefficients, strength limits and fracture aspects under various loading conditions. The obtained results made it possible to identify the relationship between the elastic qualities of rocks, their strength characteristics and loading criteria, which perfectly ensures a clearer prediction of the behavior of the array during hydraulic fracturing. Based on experimental data, the impact of geomechanical properties on the formation and development of hydraulic fracturing cracks was assessed, but the main characteristics determining the stability, opening and propagation of cracks under dynamic and static loads were also highlighted. The results can be applied to optimize the hydraulic fracturing regime, increase the efficiency of reservoir development, and minimize the risks of uncontrolled crack propagation.