Neftyanaya Provintsiya
electronic peer-reviewed scholarly publication
Neftyanaya provintsiya No. 1(45), 2026
Development of a Refined Biostratigraphic Subdivision Scheme for Jurassic Deposits in the Eastern Part of the North Ustyurt Basin Based on Plant Imprints
M.Kh. Iskandarov, Sh.A. Umarov, M.T. Khannanov, S.S. Khabibullaev, B.S. Aslanov
DOI: https://doi.org/10.25689/NP.2026.1.1-26
M.Kh. Iskandarov, Sh.A. Umarov, M.T. Khannanov, S.S. Khabibullaev, B.S. Aslanov
DOI: https://doi.org/10.25689/NP.2026.1.1-26
Abstract
An analysis of previous studies revealed that the previously developed biostratigraphic scheme only considered the conditions of the study area at the local level or within the oil and gas field. The biostratigraphic scheme used by the researchers was based on stage-by-stage subdivision, which does not comply with international standards, particularly the International Stratigraphic Code. Furthermore, this scheme fails to consider layers, strata, formations, and horizons, which is a significant drawback for obtaining comprehensive information about the study site. Therefore, the authors of the study set the task of further studying and developing a more precise scheme of biostratigraphic subdivision using the example of Jurassic deposits of one of the areas of the Ustyurt oil and gas region, which determines the relevance and scientific novelty of the topic.
As a result of their research, the authors of this article developed, for the first time, a refined biostratigraphic subdivision scheme based on the analysis of a large amount of data from deposits and boreholes associated with plant imprints. The new scheme meets the requirements of the International Stratigraphic Code and the international ESG (Environmental, Social, and Governance) framework. The developed framework was first tested in a study of Jurassic deposits in the eastern part of the North Ustyurt Basin. This solution to the problem is becoming a key tool for evaluating numerous studies on the effective search and exploration of new oil and gas deposits, and it also minimizes material and financial costs during geological exploration, including modeling geological processes.
The integrated application of a refined biostratigraphic subdivision scheme based on international ISO standards (harmonization of requirements) is becoming a factor in the modern level of ESG attractiveness, playing an important role in the competitive market among WTO countries and with the possibility of attracting new investments in the oil and gas industry.
This approach revealed the relationship between international standards and methods used to analyze and model complex geological processes occurring in the Earth's interior, particularly in the study of Jurassic deposits in the eastern part of the North Ustyurt Basin. This approach has improved its attractiveness, bringing the industry closer to the ESG rating concept.
The scientific results of the article are based on the analysis of a large amount of factual material, which reflect the stated goals and objectives of fundamental research.
Key words:
new scheme, biostratigraphic subdivision, Jurassic deposits, eastern part of the North Ustyurt Basin, plant imprints, reservoir, oil, gas, horizon, stage, suite, section, search, exploration, field, well, boundaries, International Stratigraphic Code, International ESG (Environmental, Social, Governance) concept
References
2. Dzhalilov G.G. Stratigraphy and flora of Jurassic oil and gas deposits of Ustyurt. // Abstract of the dissertation of Doctor of Philosophy (PhD) in Geological and Mineral Sciences. Tashkent. 2019. 19 p. (in Russian)
3. Iskandarov M.Kh. Development of a methodology for searching for hydrocarbon deposits in Paleozoic and Jurassic sediments of the central part of the Kuanysh-Koskalinsky swell (Republic of Karakalpakstan). // Oil and Gas Geology. Theory and Practice. Saint Petersburg. 2021. No. 1. Vol. 16. Pp. 15-21. (in Russian)
4. Iskandarov M.Kh., Abdullaev G.S., Mirzaev A.U., Khakimzyanov I.N., Umarov Sh.A. Scientific and innovative study of oil and gas formation processes in the Ustyurt oil and gas region. // Oil province. Russia. Republic of Tatarstan. Bugulma. 2022. No. 3(31) Pр.23-55. https:/ /doi.org/10.25689/NP.2022.3.23-55. eLIBRARY ID:49492219 EDN: BCDAYV DOI: 10.25689/NP. 2022.3.23-55. (in Russian)
5. Iskandarov M.Kh., Tursunova T.M., Khakimzyanov I.N., Mirzaev A.U., Umarov Sh.A., Khudaiberganov B.I. Biostratigraphic subdivision of Jurassic deposits of the Aral-Ustyurt region based on plant imprints and spore-pollen assemblages. // Oil province. Russia. Republic of Tatarstan. Bugulma. 2022. No.4 (32). Рp. 36-64. DOI: https://doi.org/10.25689/NP. 2022.4.36-64. EDN UYUIVA. (in Russian)
6. Iskandarov M.Kh., Dzhalilov G.G., Khudaiberganov B.I. Biostratigraphic subdivision of Jurassic deposits in the Aral-Ustyurt region. // LAP LAMBERT Academic Publishing. www.lappublishing.com. Germany. 2023. 105 p. (in Russian)
7. Aslanov B.S., Aslanzade F.B. Regional tectonic conditions of formation of hydrocarbon deposits of the South Caspian oil and gas province and the Persian Gulf (Turan plate and its framework). // Collection of materials of the International scientific and practical conference "Oil and gas potential of activated areas of the Turan platform and its mountainous framework". State Institution "IGIRNIGM". Tashkent. October 8-9, 2025. Pp. 25-33. (in Russian)
8. Iskandarov M.Kh., Umarov Sh.A., Khabibullaev S.S. Fundamentals of analysis of hydrocarbon raw materials localization in the Aral-Ustyurt region. // LAP LAMBERT Academic Publishing. www.lappublishing.com Germany. 2024. 73 p. (in Russian)
9. Nazarov U.S., Sunnatov M.S., Muminov A.S., Iskandarov M.Kh., Ilyasov R.S. Geological and geophysical characteristics of productive oil and gas-bearing horizons of terrigenous Jurassic deposits on the example of the Western Kuyi-Surgil field. // International scientific and practical conference "Issues of management of the development and development of oil and gas facilities". Scientific works of JSC "OZLITINEFTGAZ". Issue IV. Tashkent. 2025. Рp. 58-68. (in Russian)
10. Sharafutdinova L.P. Lithofacies features and prospects for oil and gas potential of the Jurassic deposits of Northern Ustyurt. // Abstract of the dissertation of Doctor of Philosophy (PhD) in geological and mineral sciences. Tashkent. 2019. 21 p. (in Russian)
11. Khabibullaev S.S., Umarov Sh.A., Utaev K.O., Iskandarov M.Kh. Experience and analysis of the application of international standards in the oil and gas geology of Uzbekistan. // Russian Institute of Standardization. Information and economic aspects of standardization and technical regulation. Moscow. 04/2025 (85). Pp. 8-18. (in Russian)
12. Orusov S., Abetov A.E., Esirkepova Sh.B., Iskandarov M.Kh., Umarov Sh.A., Aliyarov R.Yu., B.S.Aslanov. Regional evaluation of hydrocarbon potential in the South Ustyurt region based on integrated geological and geophysical data. // Electronic platform Academia.edu. Impact factor - 15. 2026. Pp. 1-34. (in Russian)
13. Iskandarov M.Kh., Sunnatov M.S., Umarov Sh.A., Khabibullaev S.S., Nurilloev H.Kh. Study of regularities and analysis of hydrocarbon deposits formation as an effective method of the evidence base in the historical period (on the example of a group of fields of the Ustyurt oil and gas region). Oil province. Russia. Republic of Tatarstan. Bugulma. DOI: https:// doi.org/ 10.25689 /NP.2024.4.23-46. DOI EDN CRC-WXJ. (in Russian)
14. Nazarov U.S., Sunnatov M.S., Abdurakhmanov R.E., Valiev M.R., Bekov B.Kh. Modern concepts of the geological structure and principles of field development in the Ustyurt region. // Uzbek journal of oil and gas. Tashkent. 2023. No. 2. With. 17-23 (04.00.00. No. 4). (in Russian)
15. Iskandarov M.Kh. Development of a new biostratigrafic resultion of Jurassic deposits in the Eastern part of the North Ustyurt basin based on plant impressions”. // International scientific journal “In the world of science ana education”. htts:// doi.org/10.5281/zenodo. 18872446. Published February 15. 2026. Version v1. “Endless Light in Scienice”. Earth Sciences. pр. 3-16.
Authors
M.Kh. Iskandarov, senior research fellow, Joint-Stock Company «O’ZLITINEFTGAZ»
2 Taras Shevchenko St., Tashkent, 100063, Uzbekistan
E-mail: manholiskandarov@gmail.com
Sh.A. Umarov, candidate of technical sciences, Scientific secretary, State Institution «Uzbek institute of Standards»
9v Chopon-ota St., Tashkent, 100059, Uzbekistan
E - mail: shakhumarov@gmail.com
M.T. Khannanov, Doctor of Technical Sciences, Leading Expert of the Department of Geology of Oil and Gas Fields of PJSC TATNEFT
75 Lenin St., Almetyevsk, 423462, Russian Federation
E-mail: khannanov@tatneft.ru
S.S. Khabibullaev, Chief specialist of the Ministry of Mining and Geology of the Republic of Uzbekistan
64 Olimlar St., Tashkent, 100069, Uzbekistan
E - mail: saidoas@yandex.ru
B.S. Aslanov, Doctor of geological and mineralogical sciences, Chief researcher, Research Institute "Geotechnological Problems of Oil, Gas and Chemistry"
Baku, Azerbaijan
E-mail: beyler@inbox.ru
For citation:
M.Kh. Iskandarov, Sh.A. Umarov, M.T. Khannanov, S.S. Khabibullaev, B.S. Aslanov Razrabotka utochnennoy skhemy biostratigraficheskogo raschleneniya yurskikh otlozheniy vostochnoy chasti Severo-Ustyurtskoy vpadiny po rastitel'nym otpechatkam [Development of a Refined Biostratigraphic Subdivision Scheme for Jurassic Deposits in the Eastern Part of the North Ustyurt Basin Based on Plant Imprints]. Neftyanaya Provintsiya, No. 1(45), 2026. pp. 1-26. DOI https://doi.org/10.25689/NP.2026.1.1-26. EDN AXKYVH (in Russian)
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