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THE UPPER JURASSIC AQUAFER COMPLEX, A PRIORITY TARGET FOR IMPLEMENTING CCS PROJECTS ON THE TERRITORY OF NOVOSIBIRSK REGION

Ya. V. Fomina 1, D. A. Novikov 1, A. N. Nikitenkov 2

1 Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Russia; 2 Tomsk Polytechnic University, Tomsk, Russia​

The original fluid in-place volumes in Upper Jurassic saline aquafers that remain beyond the drinking and economic uses in the northern parts of the Novosibirsk Region have been estimated with an aim to create a regional gas hub for storage of carbon dioxide captured from large sources in the southern West Siberia. The specific regional hydrological aspects, the subsurface thermobaric conditions and the hydrogeochemistry of the target geological structures are considered. The revealed prospective structures for carbon capture and sequestration (CCS) were classified and their potential capacity was evaluated. Recommendations are given for licensing of subsoil to arrange underground gas storage sites in the Upper Jurassic aquafer complex in the northern Novosibirsk Region. Analysis of the region-specific geological and hydrogeological environments according to the proposed criteria allowed mapping more than 45 geological structures with the minimum initial capacity for CO2 storing in the supercritical state estimated from 0.28 to 2.8 million tons each. From the perspective of licensing, the storage capacity of the Upper Jurassic aquafers in Novosibirsk Region totals 9.4 billion tons, and 5 billion tons for carbon dioxide storing in the supercritical state.

Keywords: carbon dioxide capture and sequestration projects, CCS technology, procedure for determining prospective objects, criteria, sedimentary basins, West Siberian Artesian Basin, northern territories of Novosibirsk Region, Russia

DOI 10.20403/2078-0575-2025-3-62-76

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