Options for geological modeling of an oil field taking into account the data of the wells

An integral part of the hydrocarbon field development process is the construction of detailed geological models. At the same time, if the deposit has a complex geological structure, it is necessary to construct the most accurate geological model, since a hydrodynamic model is constructed on its basis. With the help of hydrodynamic model, the calculation of the predicted indicators of field development is performed. If the concept laid down in the geological analysis is not confirmed by the development data, an operational review of all available initial data and adjustment of the geological model is required. In this article, a revision of the geological structure of the productive formation B2 of the Bobrikov horizon of the Visean stage of the lower section of the Carboniferous system of dome A of the oil field in the Samara region is carried out due to the identification of a discrepancy between the adopted geological model and the development data during the adaptation of the hydrodynamic model. The geological structure of the work area and tectonic elements confined to the oil and gas structure are presented. In the regional tectonic plan, the studied field is located within the south-eastern edge of the Melekess depression, which is characterized by the submergence of the crystalline basement surface in the western and south-western directions. This structural element is located within the Middle Volga oil and gas region, which is part of the Volga-Ural oil and gas province. Options for improving the geological and hydrodynamic model of the studied formation are proposed in order to study the distribution patterns of collectors, and, consequently, initial oil reserves, based on geological and field data. Improved convergence of the calculated performance indicators with historical ones for a number of wells of the field has been achieved.