The authors present the results of laboratory analysis of lithological composition, Organic Matter content, deformation behaviour and strength properties of 35 samples of Mesozoic Bazhenov bituminous argillaceous-carbonate-siliceous rocks taken in Sredneobsky Petroleum Region. According to the content of main rock-forming components and Organic Matter, the studied samples are classified into three lithological types, they are: high-carbon argillaceous-siliceous-carbonate and carbonate-argillaceous-siliceous, and carbonaceous argillaceous-siliceous rocks. Each lithotype is characterized by specific values of the parameters studied. It is found that the increase in Organic Matter content in rocks is accompanied by a change in the breaking strength of bituminous rocks, which impacts on their deformation behaviour and strength properties. The first cracks appear in high-carbon argillaceous-siliceous-carbonate (coccolithophorid-bearing) rocks containing 19% of Organic Matter on average at overburden load of 66.9 MPa; next — in the high-carbon carbonate-argillaceous-siliceous rock containing 12.5 % of Organic Matter at overburden load of 67.4 MPa; and then — in carbonaceous argillaceous-siliceous rocks containing 7 % of Organic Matter on average at overburden load of 71.6 MPa.

Nelly F. Chistyakova  ORCiD  Scopus
Doctor of Geological and Mineralogical Sciences,
Associate Professor, Professor
Tyumen State University,
Institute of Earth Sciences,
6, ul. Volodarskogo, Tymen’, 625003, Russia
e-mail: n.f.chistyakova@utmn.ru

​Varvara D. Nemova  ORCiD 
Doctor of Geological and Mineralogical Sciences,
Head of Department
LUKOIL-Engineering LLC,
3, str. 1, Pokrovsky bul., Novosibirsk, 109028, Russia
e-mail: varvara.Nemova@lukoil.com

Mikhail D. Subbotin
Master`s degree
Tyumen State University, Institute of Earth Sciences,
6, ul. Volodarskogo, Tymen’, 625003, Russia
e-mail: subbotin.mikhail@gmail.com

1. Gurari F.G., Gurari I.F. Formation of oil pools in the Bazhenov claystone, Western Siberia. Oil and gas geology. 1974;(5):36–40. In Russ.
2. Usloviya formirovaniya i metodika poiskov zalezhei nefti v argillitakh bazhenovskoi svity [Conditions of formation and methods of prospecting for oil deposits in mudstones of the Bazhenov Formation]. In: Gurari F.G., ed. Mosocw: Nedra, 1988. 199 p. In Russ.
3. Stroenie i neftegazonosnost’ bazhenitov Zapadnoi Sibiri [Structure and oil and gas content of Bazhenites of Western Siberia]. In: Nesterova I.I., ed. Tyumen’: ZapSibNIGNI, 1985. 176 p. In Russ.
4. Kontorovich A.E., Moskvina V.T., Burshtein L.M., Kostyreva E.A., Melenevskiy V.N. Bashenovo oil source formation. International Meeting of Organic Geochemistry (Torquay, England, 9–14 September 2007). Torquay, 2007. pp. 90–91.
5. Kotylev A.V., Balushkina N.A., Vishnevskaya V.S., Korobova N.M., Kalmykov G.A., Roslyakova A.S. Model of accumulation of radiolarite layers in the Bazhenov formation of Western Siberia. Moscow University Bulletin. Series 4. Geology. 2019;(1):92–97. In Russ.
6. Krasnikov A.A., Melikhov R.F., Pavlov V.A., Subbotin M.D., Emel’yanov D.V., Akhmadishin A.T. Estimating geomechanical properties of bazhenovskian-abalakskian rocks for predicting fractured zones. Neftyanaya provintsiya. 2018;15(3):31–43. DOI: 10.25689/NP.2018.3.31-43. In Russ.
7. Nesterov I.I. New type of oil and gas reservoir. Oil and gas geology. 1979;(9):26–29. In Russ.
8. Kontorovich A.E., Yan P.A., Zamirailova A.G., Kostyreva E.A., Eder V.G. Classification of rocks of the Bazhenov formation. Russian Geology and Geophysics. 2016;57(11):2034–2043. DOI: 10.15372/GiG20161106. In Russ.
9. Nemova V.D. Multi-level lithological typization of rocks of the Bazhenov Formation. Oil Industry. 2019;(8):13–17. DOI: 10.24887/0028-2448-2019-8-13-17. In Russ.
10. Nemova V.D., Pogodaeva A.M., Kim O.O., Matyukhina T.A. Petrophysical characteristics of the Late Jurassic – Early Cretaceous productive levels of the Sredne-Nazym field. Neftegazovaya geologiya. Teoriya i praktika. 2020;15(2). Available at: https://www.ngtp.ru/rub/2020/12_2020.html (accessed). DOI: 10.17353/2070-5379/12_2020. In Russ.
11. Roslyakova A.S., Kalmykov A.G., Kalmykov G.A., Fomin M.M., Karpov Yu.A., Kozlova E.V., Fadeeva N.P. Distribution of organic matterin bazhenov high-carbon formation. Moscow University Bulletin. Series 4. Geology. 2019;(2):46–57. In Russ.
12. Pronina N.V., Voitekhovich A.P. Direct signs of oil-generation in the rocks of Bazhenov Suite. Georesursy = Georesources. 2021;23(2):152–157. DOI: 10.18599/grs.2021.2.15. In Russ.
13. Eder V.G., Kostyreva E.A., Yurchenko A.N., Babushkina N.S., Sotnich I.S., Kozlova E.V., Zamirailova E.G.,Savchenko N.I. New data on lithology, organic geochemistry and accumulation conditions of the Bazhenov formation in Western Siberia. Georesursy =
Georesources. 2019;21(2):129–142. DOI: 10.18599/grs.2019.2.129-142. In Russ.
14. Eder V.G., Babushkina N.S., Zamirailova A.G., Fomin A.N. Lithological and geochemical evidence of catagenetic transformations of black shales on the example of the Bazhenov formation in Western Siberia. Moscow University Bulletin. Series
4. Geology.2021;(1):58–70. DOI: 10.33623/0579-9406-2021-1-58-70. In Russ.
15. Bulatov T.D., Kozlova E.V. Pronina N.V., Korobova N.I., Leushenko E.A., Voropaev A.V., Panchenko I.V., Morozov N.V., Spasennykh M.N. Type I kerogen in the Bazhenov formation rocks of the West Siberian petroleum basin. Moscow University Bulletin. Series 4. Geology. 2021;(6):110–119. DOI: 10.33623/0579-9406-2021-6-110-119. In Russ.
16. Panchenko I.V., Nemova V.D., Smirnova M.E., Ilyina M.V., Baraboshkin E.Yu., Ilyin V.S. Stratification and detailed correlation of Bazhenov horizon in the central part of the Western Siberia according to lithological and paleontological core analysis and well logging. Geologiya nefti i gaza. 2016;(6):1–13. In Russ.
17. Nesterov I.I. Neft’ chernykh slantsev [Black shale oil]. Izvestiya vuzov. Neft’ i gaz. 1997;(5):46–52. In Russ.
18. Kulyapin P.S., Sokolova T.F. Statistical well log analysis of the bazhenov formation. Tekhnologii seismorazvedki. 2013;(3):28–42. In Russ.
19. Zobak M.D. Reservoir Geomechanics. Moscow–Izhevsk: Institut komp’yuternykh issledovanii, 2018. 482 p. In Russ.
20. Li Z, Huang F., He X., Zhang W.,He Y. Shale-gas reservoir-prediction study in Daan zhai Eastern Sichuan Basin. The Leading Edge. 2014;(33):526–534.
21. Slatt P.M. Stratigrafic reservoir characterization for petroleum geologist geophysicists and engineers. Origin recognition initiation and reservoir quality. Oklakhoma, SShA : Elsevier B.V. Press, 2013. 688 p.
22. Kontorovich A.E., Trofimuk A.A. Litogenez i nefteobrazovanie [Lithogenesis and soil formation]. Goryuchie iskopaemye. Doklady 25 MGK. Moscow: Nauka. 1976. pp. 73–83. In Russ.
23. Duvall F.E.W., Sohn Н. Y., Pitt С. H., Bronson М. С. Physical behavior of oil shale at various temperatures and compressive loads. Free thermal expansion. Fuel. 1983;62(12):1455–1461. DOI: 10.1016/0016-2361(83)90114-X.
24. Kobchenko M., Panahi H., Renard F., Dysthe D.K., Malthe-Sorenssen A., Mazzini A., Scheibert J., Jamtveit B., Meakin P. 4D imaging of fracturing in organic-rich shales during heating. Journal of Geophysical Research. 2011;116(В12):9 p DOI: 10.1029/2011JB008565.
25. Sait T., Lin Q., Bijelgie D., Blunt M.I. Microstructural imaging and characterization of oil shale before and after pyrolysis. Fuel 2017;(197):562–574. DOI: 10.1016/j.fuel.2017.02.030.
26. Liu Z., Yang D., Hu Y., Zhang J., Shao J., Song S., Kang Z. Influence of In Situ Pyrolysis on the Evolution of Pore Structure of Oil Shale. Energies. 2018;11(4):755. DOI: 10.3390/en11040755.
27. Glotov A.V., Mikhailov N.N., Molokov II.B., Parnachev S.V, Shtyrlyaeva A.A. Evaluation of the thermal stimulation effect on the pore space structure when determining the capacitive properties of bazhenov suite rocks using the synchronous thermal analysis. 2019;(1):37–43. DOI: 10.30713/2413-5011-2019-1-37-44. In Russ.
28. Tablitsy fizicheskikh velichin: Spravochnik. In: Kikoina I.K. Moscow: Atomizdat, 1976. 1008 p. In Russ.