A.N. Fomin, V.N. Melenevskii
Catagenesis of organic matter and petroleum potential of Proterozoic, Palaeozoic, and Mesozoic formations of Lena-Anabarsky interfluve
DOI 10.31087/0016-7894-2023-6-31-39
Key words: Lena-Anabarsky interfluve; catagenesis of organic matter in Proterozoic and Phanerozoic formations; petroleum potential.
For citation: Fomin A.N., Melenevskii V.N. Catagenesis of organic matter and petroleum potential of Proterozoic, Palaeozoic, and Mesozoic formations of Lena-Anabarsky interfluve. Geologiya nefti i gaza. 2023;(6):31–39. DOI: 10.47148/0016-7894-2023-6-31-39. In Russ.
Funding: The research is completed with the financial support of FWZZ-2022-0011 Project under the Science Foundation Program.
Acknowledgments: The authors thank the colleagues from the SB RAS Institute of Petroleum Geology and Geophysics for rock samples from outcrops
provided for the study.
Organic Matter catagenesis is one of the key criteria in evaluation of petroleum potential; therefore, it is actively studied in all the sedimentary basins of interest for oil and gas exploration and prospecting. In Lena-Anabarsky interfluve, these studies were carried out to rather small extent, and pyrolysis data and, less frequently, coal petrographic data were used to assess the level of organic matter maturity. In this paper, the authors used their own data on reflectance of Organic Matter macerals (vitrinite, pseudo-vitrinite, bitumenite, and sorbomixtinite), as well as its pyrolysis characteristics in Proterozoic and Phanerozoic formations, which allows considerably update the previous conclusions. Core form deep wells and samples from outcrops were the materials for investigation. The degree of Organic Matter maturity in Proterozoic formations ranges within МК32 to АК3 gradations (designations according to A.E. Kontorovich); in Cambrian, Ordovician, and Devonian — from early mesocatagenesis (МК11) to deep apocatagenesis (АК3), and in Carboniferous and Permian — from МК12 to АК3. In Triassic, catagenesis reached МК2 gradation, in Jurassic — МК11–МК12, and in Cretaceous — ПК3–МК11.Petroleum potential may by associated with certain Paleozoic and Mesozoic formations with a moderate degree of Organic Matter maturity.
Aleksandr N. Fomin ORCiD
Doctor of Geological and Mineralogical Sciences,
Head of Department
The Trofimuk Institute of Petroleum Geology and Geophysics,
Siberian Branch of the Russian Academy of Sciences,
3, prospekt Koptyuga, Novosibirsk, 630090, Russia
e-mail: FominAN@ipgg.sbras.ru
Vasilii N. Melenevskii
Candidate of Physical and Mathematical Sciences
Senior Researcher
The Trofimuk Institute of Petroleum Geology and Geophysics,
Siberian Branch of the Russian Academy of Sciences
3, prospekt Koptyuga, Novosibirsk, 630090, Russia
e-mail: vmelenevsky@yandex.ru
1. Kim B.I., Yashin D.S., Evdokimova N.K. Hydrocarbon potential of sedimentary cover deposits of offshore East Arctic Seas of Russia (Laptev, East Siberian and Chukotsk). Geologiya nefti i gaza. 2008;(2):4–13. In Russ.
2. Kim B.I., Evdokimova N.K. Geology and oil and gas potential of the Laptev sea closure of Eurasian basin. Geologiya nefti i gaza. 2010(2): 3–10. In Russ.
3. Dakhnova M.V., Zheglova T.P., Mozhegova S.V. Generation characteristics of organic matter and distribution of biomarkers in bitumens of the Riphean, Vendian, and Cambrian source rocks of the Siberian Platform. Russian Geology and Geophysics. 2014;55(5–6):755–762. DOI: 10.1016/j.rgg.2014.05.018.
4. Bakai E.A., Smirnova M.E., Korobova N.I., Nadezhkin D.V. Permian petroleum system of Lena-Anabar trough – lithological-geochemical studies (at an example of well Ust’-Olenek 2370). Moscow University Bulletin. Series 4. Geology. 2016;(1):71–81. DOI: 10.33623/0579-9406-2016-1-71-81. In Russ.
5. Frolov S.V., Korobova N.I., Bakay E.A., Kurdina N.S. Hydrocarbon systems and petroleum potential of the Anabar-Lena trough. Georesursy. 2017;(S):173–185. DOI: 10.18599/grs.19.18. In Russ.
6. Ulmasvay F.S., Eremin N.A., Shabalin N.A., Sidorenko Sv.A. Petroleum potential of the Anabar-Lena trough. Delovoy Zhurnal Neftegaz.Ru. 2017;(1):46–52. In Russ.
7. Dmitrievskiy A.N., Eremin N.A., Shabalin N.A. Petroleum potential of the northern Siberian Platform. Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy. 2018;(1):4–10. In Russ.
8. Sobolev P.N., Lezhnin D.S., Panarin I.A. et al. Geochemical criteria of petroleum potential of the riphean-paleozoic sediments of the lenaanabarsky regional trough and adjacent territories. Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdenii. 2019;(8):62–74. DOI: 10.30713/2413-5011-2019-8(332)-62-74. In Russ.
9. Lezhnin D.S., Afanasenkov A.P., Sobolev P.N., Naidenov L.F. Riphean-Palaeozoic series in the Khatanga-Lena interfluve: geological structure and petroleum potential. Geologiya nefti i gaza. 2021;(4):7–28. DOI: 10.31087/0016-7894-2020-4-7-28. In Russ.
10. Yapaskurt O.V. Katagenez i metagenez otlozhenii paleozoya i mezozoya v geologicheskoi istorii Severnogo i Zapadnogo Verkhoyan’ya [Catagenesis and metagenesis of Palaeozoic and Mesozoic formations in geological history of Northern and Western Verkhoyansk region]. Moscow University Bulletin. Seriya 4. Geologiya. 1980;(4):15–24. In Russ.
11. Oil and gas geology of the Siberian Platform. In: A.E. Kontorovich, V.S. Surkova, A.A. Trofimuk, eds. Moscow: Nedra; 1981. 552 p. In Russ.