Geological simulation and issues of petroleum fields development
Article # 12_2023 submitted on 03/16/2023 displayed on website on 03/31/2023
17 p.
pdf Establishing a detailed oil potential scheme of the zone of the anomal section of the Bazhenov-Achimov strata on the basis of the seimogeological model
In the zones of the so called anomalous structure of the Bazhenov-Achimov strata of the Shirotnoe Ob region of Western Siberia, the construction of oil-bearing schemes is complicated by the lack of methods for detailed interpretation of seismic data within the zones of the anomalous section and by the lack of consistency in the understanding of the model of the zone structure by researchers. On the example of the Potochnoye field, with detailed consideration of seismic and well data, a seismogeological model of the zone of the anomalous section was constructed. Model describes the geological structure of the sand intrusion body, including the proximal and distal parts with different geometries of the distribution of sandy-silty-clayey sequences, which is reflected in the distribution of reservoirs over the area, and as a result, on the configuration of oil accumulations. Oil accumulations in the sandy-silty reservoirs of the zones of the anomalous section are confined to structurally and lithologically limited traps in bodies of two types: in the proximal part of the zone of the anomalous section, a fractional-block geometry is noted, reflecting the bodies of plastic landslides, in the distal part differently, a connected-elongated form of sandy-silty bodies predetermines the area of accumulations.

Keywords: oil accumulation, oil-bearing scheme, anomalous section, Bazhenov-Achimov strata, seismogeological model, Potochnoye field, Shirotnoe Ob region, Western Siberia.
article citation Gatina N.N., Garifullin I.I. Opyt postroeniya detal'noy skhemy neftenosnosti zony anomal'nogo razreza bazhenovsko-achimovskikh otlozheniy na osnove seymogeologicheskoy modeli [Establishing a detailed oil potential scheme of the zone of the anomal section of the Bazhenov-Achimov strata on the basis of the seimogeological model]. Neftegazovaya Geologiya. Teoriya I Praktika, 2023, vol. 18, no. 1, available at: http://www.ngtp.ru/rub/2023/12_2023.html EDN: NGQKOA
References
   Garifullin I.I., Gatina N.N., Gavrilov S.S., Lobusev M.A. K voprosu migratsii uglevodorodov iz «anomal'nykh razrezov» bazhenovskoy svity v achimovskie otlozheniya (na primere Kogalymsko- Langepassko-Pokachevskogo regiona v shirotnom Priob'e KhMAO) [On the issue of hydrocarbon migration from "anomalous sections" of the Bazhenov Formation to the Achimov Formation (on the Example of the Kogalym-Langepass-Pokachev Region in the Ob Shirotnoe region of the Khanty- Mansi Autonomous Okrug)]. Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 2021, no. 8(356), pp. 5-10. DOI: 10.33285/2413-5011-2021-8(356)-5-10
   Gatina N.N., Chub A.O., Golovanova M.P. Spektral'naya dekompozitsiya dlya postroeniya modeli vnutrennego ustroystva oblasti razvitiya anomal'nykh razrezov achimovsko-bazhenovskogo kompleksa [Spectral decomposition for building a model of the internal structure of the area of development of anomalous sections of the Achimov-Bazhenov strata]. Puti realizatsii neftegazovogo potentsiala KhMAO: materialy XXIII nauchno-prakticheskoy konferentsii. Khanty-Mansiysk: OOO Izdatel'skiy dom «IzdatNaukaServis», 2020, pp.59-64.
   Grishkevich V.F., Blinkova A.V., Lagutina S.V., Panina E.V., Khoroshev N.G. Opyt modelirovaniya achimovskikh otlozheniy, oslozhnennykh anomal'nymi razrezami bazhenovskoy svity, na osnove idey geomekhaniki opolznevykh protsessov [Experience in modeling Achimov strata, complicated by anomalous sections of the Bazhenov Formation, based on the ideas of geomechanics of landslide processes]. Puti realizatsii neftegazovogo potentsiala KhMAO-Yugry. Khanty- Mansiysk, 2015, vol. 1, pp.22-31.
   Grishkevich V.F., Kasatkin V.E., Lagutina S.V., Moskalenko N.Yu., Smolyakov G.A., PaninaE.V., Laptey A.G., Toropov E.S., Starikov V.S., Khoroshev N.G., Blinkova A.V., Chernoskulova V.A. Nekotorye aspekty sovmestnogo modelirovaniya otlozheniy achimovskoy tolshchi i anomal'nykh razrezov bazhenovskoy svity [Some aspects of joint modeling of accumulations of the Achimov strata and anomalous sections of the Bazhenov Formation]. Geologiya, geofizika i razrabotka mestorozhdeniy nefti i gaza, 2017, no.9, pp. 27-42.
   Oleynik E.V., Plavnik G.I. Neokomskie opolznevye yavleniya na Ur'evskoy i Potochnoy ploshchadyakh Srednego Priob'ya [Neocomian landslide phenomena in the Uryev and Potoc areas of the Middle Ob region]. Vestnik nedropol'zovatelya KhMAO, 2007, no. 17, pp. 18-23.
   Panchenko I.V., Gatina N.N., Vishnevskaya V.S., Rogov M.A., Shurekova O.V., FedyaevskiA.G., Razumkova E.S. O postsedimentatsionnoy prirode anomal'nykh razrezov bazhenovskoy i georgievskoy svit (Zapadnaya Sibir') po rezul'tatam litologii, biostratigrafii i korrelyatsii novykh kernovykh dannykh [On the post-sedimentary nature of anomalous sections of the Bazhenov and Georgiev Formations (Western Siberia) based on the results of lithology, biostratigraphy and correlation of new core data]. Melovaya sistema Rossii i blizhnego zarubezh'ya: problemy stratigrafii i paleogeografii: materialy Desyatogo Vserossiyskogo soveshchaniya (Magadan, 20-25 Sept 2020). Magadan: OAO «MAOBTI», 2020, pp.201-205.
   Strakhov P.N., Koloskov V.N., Bogdanov O.A., Sapozhnikov A.B., Sabir'yanova R.R., Strakhova E.P. Geologicheskie osobennosti osvoeniya zalezhey uglevodorodov, priurochennykh k bazhenovskoy svite s anomal'nym tipom razreza [Geological features of the development of hydrocarbon accumulations confined to the Bazhenov Formation with an anomalous section type]. Nauka i tekhnika v gazovoy promyshlennosti, 2018, no.1 (73), pp. 13-21.