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This article describes possible ways to search for hydrocarbon reserves in Zavolzhskian horizon of the Upper Devonian within the deposit No. 12 of Romashkino field. In order to study Zavolzhskian horizon we selected 2 sites with 32 wells on the deposit No. 12. Detailed correlation of the geological section was made for sediments of the Lower Carboniferous and Zavolzhskian horizon. On the basis of export correlation data and re-interpretation of logging materials we have built frames and designed three-dimensional geological models of these two sites. We analyzed core material of the studied formations and determined reservoir properties and reservoir saturation. Based on the results obtained we proposed wells for testing Zavolzhskian horizon in the area of the deposit No. 12.

Prospects of Reserves Increment in Zavolzhskian Carbonate Sediments of the Romashkino Field