Features of modeling the productivity of deposits in carbonate reservoirs of the tournaisian stage of the Ural-Volga region

The relevance of the work is due to the low level of representativeness of the results of determining the productivity coefficient based on hydrodynamic studies for their use in solving problems of oil field development, in particular, regulating the process of oil reserves selection and effective introduction of new deposits into industrial operation. The key feature of the productivity coefficient as an integral indicator that fully reflects the various properties of productive formations and fluids saturating them is its high susceptibility to the influence of many factors that arise during drilling and development of wells. This imposes certain difficulties in implementing operational monitoring of changes in indicators and making high-quality management decisions in conditions of different densities of geological and production data. The purpose of the research is to conduct geological and statistical modeling of the productivity of deposits confined to carbonate reservoirs of the Tournaisian stage of the Ural-Volga region, separately for groups of objects identified during the identification procedure. Research methods. Pattern recognition methods, multivariate linear correlation and regression analysis, discriminant analysis. Results and conclusions. When modeling the productivity of deposits, it was found that in the conditions of different groups of objects, the degree and nature of the influence of geological and physical parameters on productivity may differ due to the presence of features that are not reflected by the used and controlled data. Models are proposed for predicting productivity factors based on indirect data, the use of which allows for an up-to-date calculation of this indicator in the absence of the possibility of reliably determining productivity by hydrodynamics.