V.N. Danilov

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Em-Egovsky License Area: update of ВК1-3 beds lithology model accounting for processes of secondary carbonatization

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DOI 10.31087/0016-7894-2021-2-47-59

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Digital geological model is a basis for solving exploration and prospecting problems, assessment of natural resources and reserves, designing field development systems, and drilling support. Modelling of pay zone lithologic heterogeneity is one of the most difficult and important problems of 3D geological modelling since it is the lithology model that makes the basis for porosity and permeability distribution in a reservoir and oil and gas saturation factors within hydrocarbon accumulations. That is why improving the methodology for creating a lithology model that takes into account the processes of secondary carbonatization of rocks, is of great interest in the field of geological modelling. Integrated analysis of data made it possible to identify carbonatized varieties in Vikulovsky sediments, determine their genesis, porosity and permeability, and distribution within Em-Egovsky License Area, improve the methodology for building 3D lithology model that takes into account secondary carbonatization processes in BK1–3 formations. The authors substantiate a three-stage process of lithology cube creation.

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Key words: secondary transformations; carbonatization; reservoir; integrated analysis; modelling of lithology; laminated clay volume; variogram analysis.

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For citation: Grishchenko M.A., Ivanova I.V. Em-Egovsky License Area: update of ВК1–3 beds lithology model accounting for processes of secondary carbonatization. Geologiya nefti i gaza. 2021;(2):47–59. DOI: 10.31087/0016-7894-2021-2-47-59. In Russ.

 

References

1. Belousov S.L., Zverev K.V., Nasonova N.V., Nukalov E.N., Chernova E.V. Paleogeografiya vikulovskikh otlozhenii Krasnoleninskogo svoda [Paleogeography of the Vikulovsky deposits of the Krasnoleninsky arch]. In: Puti realizatsii neftegazovogo i rudnogo potentsiala Khanty-Mansiiskogo avtonomnogo okruga – Yugry. Khanty-Mansiisk: Izdatel’skii Dom “IzdaTNaukAServiS”; 2010. Vol. 1. pp. 247–254. In Russ.
2. Kostenevich K.A., Fedortsov I.V. Foundation of litho-facial regularities of reservoirs propagation in the complex structure deposits Neftyanoe khozyaistvo. 2011;(4):26–29. In Russ.
3. Alekseev V.P., Amon E.O., Fedorov Yu.N. et al. Sostav, stroenie i usloviya formirovaniya kollektorov gruppy VK vostochnoi chasti Krasnoleninskogo neftyanogo mestorozhdeniya (Zapadnaya Sibir’) [Composition, structure, and settings of formation of ВК group reservoirs in the eastern part of Krasnoleninsky oil field (Western Siberia)]. In: V.P. Alekseeva, ed. Ekaterinburg: Izd-vo UGGU; 2011. 325 p. In Russ.
4. Yapaskurt O.V. Stage Analysis of Minerals that Witnessed Formation and Evolution Dynamics of Sedimentary Rocks – Perspective Scientific Direction of Lithology and Geology of Oil and Gas. Georesursy = Georesources. 2016;18(1):64–68. DOI: 10.18599/grs.18.1.12. In Russ.
5. Mikhailov N.N., Motorova K.A., Sechina L.S. Geologicheskie faktory smachivaemosti porod-kollektorov nefti i gaza [Geological factors of wettability of oil and gas reservoir rocks]. Neftegaz.RU. 2016;(3):80–90. In Russ.
6. Podnebesnykh A.V., Kuznetsov S.V., Ovchinnikov V.P. The basic types of secondary changes in reservoir rocks in the territory of the West Siberia plate. Neft’ i gaz. 2015;(2):26–30. In Russ.
7. Akin’shin A.V., Efimov V.A. Petrophysical model of complex layers by the example of Vikul suite of Krasnoleninsk arch. Oil industry. 2012;(8):22–24. In Russ.
8. Strakhov N.M. Osnovy teorii litogeneza. T. 1. Tipy litogeneza i ikh razmeshchenie na poverkhnosti Zemli [Foundations of the theory of lithogenesis. Vol. 1. Types of lithogenesis and their placement on the Earth’s surface]. Moscow: Izdatel’stvo AN SSSR; 1960. – 212 p. In Russ.
9. Dem’yanov V.V., Savel’eva E.A. Geostatistika, teoriya i praktika [Geostatistics, theory and practice]. Moscow: Nauka; 2010. 327 p. In Russ.
10. Kazanskaya D.A., Aleksandrov V.M., Belkina V.A. Geological modelling of Vikulovskaya suite production deposits. Bulletin of the Tomsk Polytechnic University. Geo Assets Engineering. 2019;330(7):195–207. DOI: 10.18799/24131830/2019/7/2195. In Russ.
11. Panyak S.G., Ivanova I.V. Uchet protsessov karbonatizatsii pri sozdanii trekhmernoi geologicheskoi modeli otlozhenii vasyuganskoi svity [Accounting for carbonatization processes in creating 3D geological model of Vasyugansky deposits]. In: Ural’skaya gornaya shkola – regionam: sb. trudov mezhdunarodnjy nauchno-prakticheskoy konferentsii. Ekaterinburg: Izd-vo UGGU; 2019. pp. 393–394. In Russ.

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M.A. Grishchenko  iD

Senior expert,
Candidate of Technical Sciences
Tyumen Oil Research Center,
ul. Osipenko, 79/1, Tyumen`, 625002 Russia
e-mail: MAGrischenko@tnnc.rosneft.ru
 

I.V. Ivanova   iD
Manager
Tyumen Oil Research Center,
ul. Osipenko, 79/1, Tyumen`, 625002 Russia
e-mail: ivivanova@tnnc.rosneft.ru