Differentiated assessment of the oil and gas potential of the sides of the Vilyui syneclise

The urgency of the issue of increasing the volume of the hydrocarbon raw material base in the Vilyui syneclise was noted. The lithological and stratigraphic characteristics of the Upper Paleozoic-Mesozoic syneclise deposits and are briefly given. The main oil and gas complexes are identified. Based on a model of the history of sedimentary rock subsidence in the Vilyui syneclise, the gradations of catagenesis and the intensity of oil and gas generation on the Permian and Lower Jurassic oil source deposits were determined. The potential of oil and gas generation of the Permian and Lower Jurassic oil source deposits was quantified. Taking into account the accumulation coefficient, it is concluded that deposits with total reserves of up to 10 billion tons of conditional hydrocarbons can be found on the territory of the Vilyui syneclise. The territory of the north-western side of the Vilyui syneclise was identified as the most promising for the discovery of gas fields.  It is assumed that two types of traps on pinching-out structures may develop here. Based on the identification by V. D. Nalivkin (1971) of the confinedness of oil fields with inherited structures, the slopes of the Suntar, Munsky, and Yakut arches adjacent to the Vilyui syneclise as promising territories for the discovery of oil deposits were identified. The direct and indirect indicators of the oil cintent prospects of these territories are given. The need to queue up first-priority geological exploration in the recommended territories in the Vilyui syneclise was emphasized.

1. Safronov A.F. Historical and genetic analysis of oil and gas formation processes (based on the east of the Siberian platform). Yakutsk: Publishing House of the Yakutsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences; 1992:145 (in Russian).

2. Safronov A.F. Oil and gas potential of the eastern Siberian platform: Historical and genetic analysis, and distribution of oil and gas deposits. Natural Resources of the Arctic and Subarctic. 2014;19(3):63–69 (in Russian).

3. Chernenko V.B. Features of the geological structure and prospects of oil content of the Sobolokh-Nejelinskoye gas condensate field. Science and Education. 2013;4(72): 24–32 (in Russian).

4. Safronov A.F., Sivtsev A.I., Chernenko V.B. Oil potential of the Lower Mesozoic deposits of the Khapschagai megawall of the Vilyui. Geology and Geophysics. 2014;55(8):1263–1269 (in Russian). DOI 10.15372/GiG20140807.

5. Semenov V.P., Zheleznyak M.N. Features of geotemperature field and occurrence of permafrost section of Vilyui syneclise. Natural Resources of the Arctic and Subarctic. 2018;4:45–54 (in Russian). DOI: https://doi.org/10.31242/2618-9712-2018-26-4-45-54.

6. Kontorovich A.E., Neruchev S.G. Catagenesis of dispersed organic matter and oil and gas formation. Problems of Siberia's Oil Potential. Novosibirsk: Nauka; 1971:51–69 (in Russian).

7. Safronov A.F., Bodunov E.I., Kashirtsev V.A., Izosimova A.N. Conditions of hydrocarbon generation in Upper Paleozoic and Mesozoic deposits of the Northeastern margin of the Siberian platform. Geology and Geophysics. 1979;1:3–8 (in Russian).

8. Zueva I.N. Chalaya O.N., Safronov A.F., et al. Oil generation potential of the scattered organic matter in the Permian deposits of the Vilyui basin. Science and Education. 2017;2:17–21 (in Russian).

9. Zueva I.N., Chalaya O.N., Safronov A.F., et al. Characteristics of dispersed organic matter and assessment of the oil-generating potential of the Upper Leysasian deposits of the Vilyui syneclise. Science and Education. 2013;2:41–46 (in Russian).

10. Vasilyev S.A., Sobolev P.N., Taffarel E.S., et al. Oil and gas зotential of the Vilyui Synclise and prospects for searching for hydrocarbon deposits. Geology, Geophysics, and Development of Oil and Gas Fields. 2018;12:14–26 (in Russian). DOI 10.30713/2413-5011-2018-12-14-26.

11. Deliu E. A. Features of the geological structure of the lower jurassic deposits of the Vilyui Sinclise. Regional Geology and Metallogeny. 2025;32(1):71–78 (in Russian) doi:10.52349/0869-7892_2025_101_71-78

12. Fedorovich M.O., Kosmacheva A.Yu. Prediction of oil and gas occurrence in the Vilyui hemisineclise according to interpretation of geological and geophysical data and basin modeling (Sakha Republic (Yakutia)). Georesursy = Georesources. 2023;25(1):81–94 (in Russian). https://doi.org/10.18599/grs.2023.1.9

13. Kontorovich A.E. Geochemical methods of quantitative prediction of oil and gas potential. Moscow: Nedra; 1976:250 (in Russian).

14. Mikulenko K.I., Sitnikov V.S., Timirshin K.V., Bulgakova M.D. Evolution of the structure and conditions of oil and gas formation in the sedimentary basins of Yakutia. Yakutsk: YSC SB RAS;1995:180 (in Russian).

15. Syundyukov I.Sh., Sivtsev A.I. The use of coal catagenesis for paleotectonic reconstructions in the Lena-Vilyui oil and gas basin. In: Degassing of the Earth: geotectonics, geodynamics, geofluids; oil and gas; hydrocarbons and life: proceedings of the All-Russian Conference with international participation dedicated to the 100th anniversary of the birth of Academician P.N. Kropotkin, October 18–22, 2010, Moscow. Moscow: GEOS; 2010:542–545 (in Russian).

16. Neruchev S.G. Oil-producing series and oil migration. Leningrad: Nedra; 1969:240 (in Russian).

17. Neruchev S.G., Rogozina E.A. Geochemical foundations of oil and gas prospecting. St. Petersburg: VNIGRI; 2010:280 (in Russian).

18. Neruchev S.G., Bazhenova T.K., Smirnov S.V., et al. Assessment of potential hydrocarbon resources based on modeling of their generation, migration, and accumulation processes. St. Petersburg: Nedra; 2006:364 (in Russian).

19. Vysotsky I.V., Vysotsky V.I. Formation of oil, gas, and condensate-gas deposits. Moscow: Nedra; 1986:228 (in Russian).

20. Lazarev V.S., Nalivkin V.D. (eds.). An analysis of the influence of various factors on the location and formation of oil and gas deposits (based on the example of platform regions). Leningrad: Nedra; 1971:336 (in Russian).

21. Sivtsev A.I. Prospects for oil and gas potential of the northeastern slope of the Suntarsky uplift. In: Geology and mineral resources of the North-East of Russia: Proceedings of the IX All-Russian scientific and practical conference: in 2 volumes. 2019:260–263 (in Russian).

22. Kalinin A.I., Sivtsev A.I. Prospects for oil and gas potential in the north-eastern part of the aldan anteclise. Oil Industry. 2019;6:22–27 (in Russian).

23. Pogodaev A.V., Sitnikov V.S., Buydillo I.V. Prospects for oil and gas potential and priority areas for further exploration in the Vilyui oil and gas field (Siberian Platform). Geology of Oil and Gas. 2015;2:6–16 (in Russian).

24. Kashirtsev V.A. Organic geochemistry of naftids in the east of the Siberian platform. Yakutsk: YaF Publishing House of the SB RAS; 2003:160 (in Russian).