I.A. Marakova
Prediction of hydrocarbon accumulations in the Pre-Urals foreland basin interior zone
DOI 10.31087/0016-7894-2021-4-95-101
Key words: Timan-Pechora oil and gas province; carbonate deposits; promising structures; formation conditions; trap; reservoir; migration.
For citation: Marakova I.A. Prediction of hydrocarbon accumulations in the Pre-Urals foreland basin interior zone. Geologiya nefti i gaza. 2021;(4):95–101. DOI: 10.31087/0016-7894-2021-4-95-101. In Russ.
The author shows that the share of hard-to-recover oils has significantly increased in the structure of Russian reserves. At the same time, the production of these raw materials is growing much slower than its share in the total volume of reserves. Such a disbalance especially typical of the mature producing regions leads to resource base decrease and deterioration. The authors discuss the conditions of carbonate deposits formation and structural features of the Domanic-Tournaisian oil and gas play within the studied areas of the Verkhnepechorsky transverse uplift. The authors discuss the most promising objects that have been identified using geological and geophysical data. Factors that contributed to trap formation in the study area in the Domanic-Famennian time are analyzed. To assess the resources, an advanced approach to predict initial potential resources was used taking into account calculation of hydrocarbon migration streams speed and range and probability of reaching a given depth interval. The authors present a typical workflow for hydrocarbon accumulations predicting, which can be used to assess the probability of charging a trap with hydrocarbons in certain depth interval. Based on interpretation of a significant volume of geological and geophysical material, the results of calculating the probability of trap charging within the Izjayusky structure are presented.
Inna A. Marakova ORCiD
Candidate of Geological and Mineralogical Sciences,
Associate Professor
Ukhta State
Technical University,
13, ul. Pervomaiskaya, Ukhta, 169300, Russia
e-mail: miss.marakova@mail.ru
1. Prishchepa O.M., Bogatskii V.I., Makarevich V.N., Chumakova O.V., Nikonov N.I., Kuranov A.V., Bogdanov M.M. The Timan-Pechora oil-bearing province — new tectonical insight. Neftegazovaya geologiya. Teoriya i praktika. 2011;6(4). Available at: http://www.ngtp.ru/rub/4/40_2011.pdf (accessed 01.09.2020). In Russ.
2. Rostovshchikov V.B., Marakova I.V., Kolokolova I.A. Perspektivy otkrytiya novykh mestorozhdenii uglevodorodov v Timano-Pechorskoi provintsii [Prospects for new hydrocarbon fields in the Timan-Pechora province]. In: Geologiya i mineral’nye resursy Evropeiskogo Severo-Vostoka Rossii: materialy XVII Geologicheskogo s”ezda Respubliki Komi. V. III. Syktyvkar: IG Komi NTS URO RAN; 2019. pp. 142–149. In Russ.
3. Korotkov S.V., Rostovshchikov V.B., Kolokolova I.V. Novye napravleniya poiskov krupnykh mestorozhdenii uglevodorodov v Predural’skom kraevom progibe. In: Rassokhinskie chteniya: mat-ly mezhdunar. konf. (Ukhta, 7–8 February, 2016). Part 1. Ukhta: UGTU; 2016. pp. 75–78. In Russ.
4. Khisamov R.S., Safarov A.F., Kalimullin A.M., Dryagalkina A.A. Probabilistic-statistical estimation of reserves and resources according to the international classification SPE-PRMS. Georesursy = Georesources. 2018;20(3(P. 1)):158–164. DOI: 10.18599/grs.2018.3.158-164. In Russ.
5. Emel’yanova N.M. Poroskun V.I. Veroyatnostnyi metod podscheta i klassifika-tsii zapasov nefti i gaza (analiz metodicheskikh podkhodov) [Probabilistic method for calculating and classifying oil and gas reserves (analysis of methodological approaches)]. Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdenii. 2004;(7):4 – 12. In Russ.
6. Grunis E.B., Varlamov A.I., Rostovshchikov V.B., Marakova I.A. Status and ways to buildup hydrocarbon raw materials base in Russian Federation and challenges of geological modeling [Sostoyanie, puti narashchivaniya syr’evoi bazy uglevodorodov v Rossiiskoi Federatsii i problemy geologicheskogo modelirovaniya]. In: Problemy geologii, razrabotki i ekspluatatsii mestorozhdenii i transporta trudnoizvlekaemykh zapasov uglevodorodov (Ukhta, 1–2 November, 2018): sb. nauch. tr. po mat-lam mezhdunar. nauch.-prakt. konf. Moscow: Izd-vo “Pero”, 2019. pp. 138–144. In Russ.
7. Rostovshchikov V.B., Kolokolova I.V. Prospects for new hydrocarbon fields discovery in the Paleozoic carbonate deposits of the Timan-Pechora Province [Perspektivy i problemy poiskov mestorozhdenii nefti i gaza v paleozoiskikh karbonatnykh otlozheniyakh Timano-Pechorskoi provintsii]. In: Rassokhinskie chteniya: mat-ly mezhdunar. konf. (Ukhta, 4–5 February, 2016). Part 1. Ukhta: UGTU; 2016. pp. 82–87. In Russ.
8. Bogdanov B.P., Rostovshchikov V.B., Marakova I.A. Unique reef objects of Khoreiversky Depression in the context of oil and gas occurrence [Unikal’nye rifovye ob”ekty Khoreiverskoi vpadiny v svyazi s neftegazonosnost’yu]. In: Rassokhinskie chteniya: mat-ly mezhdunar. konf. (Ukhta, 4–5 February, 2016). Part 1. Ukhta: UGTU; 2016. pp. 98–103. In Russ.
9. Bogdanov B.P., Rostovshchikov V.B., Nedilyuk L.P., Marakova I.A., Senin S.V. Tectonical and geochemical preconditions for petroleum potential of Chernyshov ridge. Neftegazovaya geologiya. Teoriya i praktika. 2016;11(2). Available at: http://www.ngtp.ru/rub/4/18_2016.pdf (accessed on 01.09.2020). DOI: 10.17353/2070-5379/18_2016. In Russ.
10. Teplov E.L., Kostygova P.K., Larionova Z.V. Prirodnye rezervuary neftegazonosnykh kompleksov Timano-Pechorskoi provintsii [Natural reservoirs of hydrocarbon plays in the Timan-Pechora Province]. St. Petersburg: Renome; 2011. 286 p. In Russ.
11. Anischenko L.A., Visheratina N.P., Gudel’man A.A., Danilov V.N. The geological structure and gas prospects of the western slope of the Polar and Subpolar Urals (as a result of geological exploration). In: V.N. Danilov, ed. Ukhta: VNIGRI; 2015. 264 p. In Russ.