Link for citation: Bulanov  N.S., Zedgenizov A.V. Optimization of development of the Verkhnechonsky oil and gas condensate field by using well functions, influence of heterogeneity parameter on development, application of modeling in Petrel and tNavigator. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2022, vol. 333, no. 3, рр. 206-216. In Rus.

Relevance. The study is devoted to improving the accuracy of constructing geological and hydrodynamic models. At the moment, three-dimensional modeling plays an important role in designing and assessing the prospects of hydrocarbon deposits, which is why it is necessary to look for new patterns that will reduce the error of calculated parameters and increase the reliability of calculations. It is necessary to find the balance between the complexity of the model and the time period necessary for its calculation, otherwise the calculation will either be performed incorrectly, or there will be no possibility of calculating a large variation of the proposed solutions. Main aim of the research is to improve the accuracy of the hydrodynamic model by varying the inhomogeneity parameter (P), to build a correlation dependence of P on the number of layers in the model; integrate a new stock of production wells into the existing development system; compare the original and new projected grids. Objects: reservoirs VCh₁ and VCh₂ of the Verkhnechonsky horizon, separated by a clay bar. Methods: geological and hydrodynamic modeling of the investigated area using Petrel and tNavigator software; highlighting the area with the greatest optimization potential; selection of the number of model layers for an adequate assessment of mobile residual reserves based on the correlation dependence of the heterogeneity coefficient; calculation of predicted development indicators. Results. The calculation of geological oil reserves was carried out using a three-dimensional geological model in the Volume calculation module using the net-to-gross (NTG) ratio, porosity coefficient, oil saturation and density parameters and a conversion factor. Four additional wells were drilled in the simulated area. The coverage of the simulated waterflooding system increased. The influence of the heterogeneity parameter on the accuracy of the model construction and on the license area operation strategy is estimated. A new development system is proposed.