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HYDROGEOCHEMISTRY OF ARCTIC OIL-AND-GAS BEARING BASINS IN THE CONTEXT OF INDUSTRIAL CONTAMINATION OF ​GROUNDWATERS: EVALUATING PROSPECTS OF HYDROMINERAL RAW MATERIALS PROCESSING​

D. A. Novikov 1,2, V. A. Kashirtsev 1, F. F. Dultsev 1, S. V. Ryzhkova 1, E. V. Borisov 1, L. G. Vakulenko 1, P. A. Yan 1​

1 Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Russia; 2 Almetyevsk State Technological University “Higher School of Oil”, Almetyevsk, Republic of Tatarstan, Russia​

The hydrogeochemical data analysis conducted for Arctic oil-and-gas bearing basins has shown that waters in their aquifers differ widely in chemical composition and genesis, from fresh to superstrong brines. These aquifer complexes are unique due to the integration of groundwaters containing industrial concentrations of lithium, rubidium, strontium, iodine, bromine and boron oxide within the stratigraphic range from ancient Precambrian to Quaternary rocks. The microcomponents distribution in waters is intricate, since their total mineralization varies from brackish to superstrong brines. The measured concentrations (mg/dm³) of the elements included: lithium (up to 745), rubidium (up to 175), strontium (up to 9963), iodine (up to 924), bromine (up to 13840), and boron oxide (up to 6650). Among the studied geological structures in the Arctic, brines in the Tunguska and Sukhana petroleum basins and in the southern slope of the Anabar Shield have shown the highest concentrations of industrial microcomponents.

Keywords: hydrogeochemistry, hydromineral raw materials, oil-and-gas bearing basins, industrial microcomponents, metamorphic grade (catagenetic alterations), Arctic.

DOI 10.20403/2078-0575-2025-4a-50-67

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