Assessment of the Relationship Between Fracturing and Fault Tectonics of Paleozoic Deposits

Numerous observations on outcrops, as well as theoretical considerations, confirm the effect of first-generation fractures on second-generation fractures. Parameters of fractures of the second generation are associated with a modified stress field due to previously formed fractures. To date, software products have been developed that allow the calculation of changes in the stress field due to previously formed fractures or faults. However, a large number of factors affect the predictive ability: such as the nature of fractures, the accuracy of estimating the parameters of first-generation fractures, the quality of the initial data etc. In this project, it is proposed to assess the possibility of predicting the second generation fracturing from the available data on the first-generation faults. During the study, the relationship between fractures of the first and second generations was confirmed. However, the zone of influence of the preexisting fractures significantly depends on the specific stress ratio in certain periods of time, which not easily could be predicted and is the main sources of the uncertainties. Also, the 3D BEM has some limitations and assumptions. Hence, the actual predictability of the second-generated faults and fractures is low and could be performed in a very limited area.