Regional petroleum geology
Article # 22_2024 submitted on 06/21/2024 displayed on website on 08/22/2024
21 p.
pdf The influence of the reservoir brines composition on epigenetic changes in the Upper Silurian-Lower Devonian carbonate rocks of the Gambutsev swell (Timan-Pechora petroleum province)
The results of a comprehensive interpretation of lithological and geochemical studies of core material and modeling of geochemical interaction processes in the formation water-rock system for Lower Paleozoic productive strata of the Gamburtsev swell Varandey-Adzva tectonic zone are presented. The effects of sodium chloride brines on carbonate, sulfate-carbonate rocks are discussed for the first time. The calculations of the degree of saturation of waters in relation to carbonate and sulfate minerals and their comparison with the epigenetic mineralization of rocks allowed us to identify the main processes contributing to the formation of neo-minerals in the Lower Paleozoic reservoir. As a result, new data were obtained that contribute to a more accurate prediction of the reservoir properties of rocks of the Lower Paleozoic carbonate strata in the north-east of the Timan-Pechora petroleum province.

Keywords: carbonate rock, sulfate-carbonate rock, reservoir sodium chloride brines, epigenetic change, Gamburtsev swell, Varandey-Adzva tectonic zone, Timan-Pechora petroleum province.
article citation Maydl' T.V., Mityusheva T.P., Ul'nyrov I.L., Nechaev M.S. Vliyanie sostava plastovykh rassolov na epigeneticheskie izmeneniya verkhnesiluriysko-nizhnedevonskikh karbonatnykh porod vala Gamburtseva (Timano-Pechorskaya neftegazonosnaya provintsiya) [The influence of the reservoir brines composition on epigenetic changes in the Upper Silurian-Lower Devonian carbonate rocks of the Gambutsev swell (Timan-Pechora petroleum province)]. Neftegazovaya Geologiya. Teoriya I Praktika, 2024, vol. 19, no. 3, available at: https://www.ngtp.ru/rub/2024/22_2024.html EDN: BOOZTS
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