The article presents the results of the study of the geological features of the productive horizons of the Opar gas field and the analysis of its developments using 3D modeling. The effect of the heterogeneity of layers - reservoirs on the development process of the field was evaluated. A comprehensive analysis of the filtration and capacity characteristics of the productive horizons of the Opar deposit revealed a significant heterogeneity of the strata in terms of area and section. In the development of non-homogeneous formations, at the first stage, mainly highly permeable formations are drained.As the formation depression increases in low-permeability formations, their flow rate gradually increases, and at the final stage of development, even gas flow from low-permeability formations to high-permeability formations is possible. The article provides a methodology for taking into account these features of the reservoir when designing the development of gas fields. Taking into account the heterogeneity of productive horizons will help to more reliably determine the technological indicators that are included in development projects, which will help to avoid significant economic losses.
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