A NEW SCHEME OF OIL AND GAS GEOLOGICAL ZONING OF THE LENA-TUNGUSKA OIL AND GAS BEARING PROVINCE
A.E. Kontorovich1, S.A. Moiseev1, L.M. Burshtein1, P.I. Safronov1, V.A. Kontorovich1, I.A. Gubin1, L.N. Konstantinova1, A.M. Fomin1, E.N. Kuznetsova1, A.O. Gordeeva1
1Institute of Petroleum Geology and Geophysics named after. A.A. Trofimuk SB RAS, Novosibirsk, Russia
Keywords: Lena-Tunguska oil and gas province, oil and gas geological zoning, oil and gas region, Riphean, Vendian, Cambrian
Abstract
Based on the analysis of geological and geophysical data obtained over the past 20-25 years, a refined scheme of petroleum-geological zoning of the Lena-Tunguska petroleum province is proposed. In substantiating the boundaries of the petroleum regions, lithofacies zoning factors were significantly used along with tectonic zoning. According to modern structural reconstructions, the areas of the Katanga and Syugdzher saddles have significantly decreased in size. Based on this, it is proposed to abandon the identification of the Katanga and Syugdzher petroleum regions. The Central Tunguska petroleum region is distinguished in place of the Syugdzher and northern parts of the Katanga petroleum region. The Vanavara independent petroleum region is distinguished in the south of the Katanga petroleum region. The southern boundary of the North Tunguska petroleum region is drawn along the southern boundary of the Great Siberian System of Cambrian Barrier Reefs. The North Aldan Oil and Gas Region was divided into the Srednelena, Aldan, and Aldan-Mai regions. New data on the geological structure of the Lena-Tunguska province allowed the inclusion of the Anabar-Khatanga and Lena-Anabar Oil and Gas Regions. For each oil and gas region, the most promising levels are substantiated.
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