Deposits represented by carbonate reservoirs play an increasing role in the formation of the resource potential throughout the world. On the territory of the Russian Federation, one of the strategic regions for the production of hydrocarbons from carbonate reservoirs is the Nepa-Botuoba anteclise, located in the southeastern part of the Siberian Platform. In the article, the authors, as a result of summarizing a large amount of previously completed work, present search criteria for oil and gas deposits in the Osinsky productive horizon. Based on the integration of different-scale geological and geophysical material, large barrier-type carbonate structures were mapped within the considered territory of the Nepa-Botuoba anteclise, which will strengthen the geological exploration program in order to replenish the resource base. As a result of the work carried out by the authors to generalize the available material, the genesis and morphology of carbonate structures in the Osinsky horizon were determined, new lithological features of their structure were described; a forecast was given for the distribution of reservoirs with improved reservoir properties and favorable criteria for the formation of such intervals. Based on seismic data, the authors identified a fundamentally new zone, the so-called “Windows” zone, which is characterized by a change in the wave pattern, which can serve as a search criterion for zones of increased productivity. Thus, the criteria for searching for new deposits and mapping reservoir zones with improved reservoir properties have been identified, which can be used in planning geological exploration. The prerequisites for the presence of significant volumes of hydrocarbon resources have been identified, which gives hope for the discovery in the future of large or even unique oil and gas fields in the Osinsky horizon within the Nepa-Botuoba anteclise of Eastern Siberia.
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