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ON THE PETROLEUM POTENTIAL PROSPECTS OF THE GORNY TAYMYR PRE-JURASSIC DEPOSITS BASED ON GEOLOGICAL AND GEOCHEMICAL STUDIES

A. P. Afanasenkov 1, 2, A. K. Bitner 3, A. P. Romanov 4, Iu. V. Shekhodanova 1, V. I. Kazais 5, D. G. Kushnir 5, S. L. Kalamkarov 1

1 All-Russian Research Geological Oil Institute, Moscow, Russia; 2 Lomonosov Moscow State University, Moscow, Russia; 3 Institute of Oil and Gas, Siberian Federal University, Krasnoyarsk, Russia; 4 Krasnoyarsk Research Institute of Geology and Mineral Resources, Russia, Krasnoyarsk; 5 Taymyrgeofizika, Dudinka, Russia

The results of geochemical studies of the dispersed organic matter and bitumens of the south folded Taymyr and Yenisey-Khatanga regional trough (YKhRT) are described. It is shown that several levels of the oil-and-gas generation are possible in the Paleozoic section of the Taymyr: Riphean, Lower Cambrian, Upper Ordovician, Lower Silurian, Devonian, Carboniferous-Permian. The results of the HC-biomarkers study in bitumoids of rocks and bitumen samples of the Syradasayskaya area and Tareyskiy block of the Central Taymyr showed their genetic relationship with the OM of aquatic (sapropelic) type of the Ust-Pyasinskaya, Dombinskaya, Zeledeevskaya, Makarovskaya Formations of the northern facies zone, that indicates the oil prospect of the territory. In the conjunction zone of the northern flank of the YKhRT and Gorny Taymyr, there is a territory that is promising for petroleum exploration. The source is the black-shale stratum of the Silurian, Devonian and Carboniferous. One of the most promising targets is the Tareya swell and slopes of the Yangoda-Gorbit salient of inversion type in the northern part of the YKhRT, confirmed by seismic data of recent years.

Keywords: organic matter, kerogen, Gorny Taymyr, Yenisey-Khatanga regional trough, petroleum bearing strata.

DOI 10.20403/2078-0575-2019-2-51-64