Schekoldin R.A.

Schekoldin_RA@pers.spmi.ru



Graduated from Leningrad Mining Institute (1970), specialization “mining geological engineer”.
PhD in Geological and Mineralogical Sciences. Docent of St. Petersburg Mining University.
Scientific interest area: stratigraphy and paleogeography.
Author of 38 publications.
Hard-extracted reserves, unconventional hydrocarbon sources
Article # 30_2022 submitted on 08/08/2022 displayed on website on 09/14/2022
19 p.
pdf Geological conditions and model of bitumoids formation in the Fresco area of the western sector of the Côte d'Ivoire basin
A model for the formation of bitumoids in the Fresco region (sedimentary basin of Côte d'Ivoire, Western Africa) and an assessment of the prospects for petroleum potential of the Upper Cretaceous-Cenozoic strata of the Fresco area based on geological and geochemical studies are presented. It is shown that in the Fresco region there are no thermobaric conditions for the generation of hydrocarbons. It has been established that bitumoids were formed during the thermal destruction of organic matter to the west of the Fresco area, which has a significant thickness of the sedimentary cover. Bitumoids arose as a result of desorption, primary migration and accumulation of hydrocarbons in the Fresco region.

Keywords: geological and geochemical studies, petroleum prospects, Upper Cretaceous-Cenozoic strata, bitumoid formation model, Fresco region, Ivory Coast sedimentary basin, Western Africa.
article citation Diсko Mouhamadou B.B., Schekoldin R.A., Dmitrieva T.V., Shapiro A.I. Geologicheskie usloviya i model' formirovaniya bitumoidov v rayone Fresko zapadnogo sektora basseyna Kot-d’Ivuar [Geological conditions and model of bitumoids formation in the Fresco area of the western sector of the Côte d'Ivoire basin]. Neftegazovaya Geologiya. Teoriya I Praktika, 2022, vol. 17, no. 3, available at: http://www.ngtp.ru/rub/2022/30_2022.html
DOI https://doi.org/10.17353/2070-5379/30_2022
References
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   Basile C., Mascle J., Popoff M., Bouillin J.P., Mascle G. The Ivory Coast-Ghana transform margin - A marginal ridge structure deduced from seismic data: Tecto-nophysics, 1993, v. 222, p. 1-19.
   Bénédicte Dibo W., Errami E., Jean-Paul Yao N., Léger Djeya K., Tea J., Marcelle Gauly G., Bruno Digbehi Z. Inventaire Et Évaluation Scientifique Des Géosites Des Falaises De Fresco En Côte d’Ivoire. European Scientific Journal, ESJ, 2021, 17(25), 150. DOI: https://doi.org/10.19044/esj.2021.v17n25p150
   Bogdanova M.V. Khimicheskie osobennosti i genezis burykh ugley Kazakhstana [Chemical features and genesis of brown coals of Kazakhstan]. Moscow-Leningrad, Nauka, 1996, 165 p.
   Bogomolova A.I., Temyanko M.B., Khotintsevoy L.I. Sovremennye metody issledovaniya neftey [Modern methods of studying oils]. Leningrad: «Nedra», 1984, 431 p.
   Brownfield M.E., Charpentier R.R. Geology and total petroleum systems of the Gulf of Guinea Province of west Africa: U.S Geological Survey Bulletin 2207-C, 2006, 32 p.
   Diangone B.T. Geologo-geokhimicheskie i termobaricheskie usloviya neftegazonosnosti basseyna Kot-d'Ivuar [Geological-geochemical and thermobaric conditions of oil and gas potential in the Cote d'Ivoire basin]. Moscow: Izd-vo RGU nefti i gaza, 2009, 120 p.
   Dicko Mouhamadou B.B., Schekoldin R.A., Dmitrieva T.V. Osobennosti sostava i usloviya formirovaniya kaynozoyskikh otlozheniy regiona Gran-Lau neftegazonosnogo basseyna Kot-d'Ivuar [Lithofacial features and formation conditions of the Cenozoic section of the Gran-Lau region - petroleum basin of Cоte-d'Ivoire]. Neftegazovaya Geologiya. Teoriya I Praktika, 2019, vol. 14, no. 2, available at: http://www.ngtp.ru/rub/2019/16_2019.html. DOI: https://doi.org/10.17353/2070-5379/16_2019
   Kontorovich A.E., Burshteyn L.M., Malyshev N.A., Safronov P.I., Gus'kov S.A., Ershov S.V., Kazanenkov V.A., Kim N.S., Kontorovich V.A., Kostyreva E.A., Melenevskiy V.N., Livshits V.R., Polyakov A.A., Skvortsov M.B. Istoriko-geologicheskoe modelirovanie protsessov naftidogeneza v mezozoysko-kaynozoyskom osadochnom basseyne Karskogo morya [Historical and geological modeling of naphto diagenesis processes in the Mesozoic-Cenozoic sedimentary basin of the Kara Sea]. Geologiya i geofizika, 2013, vol. 54, no. 8, pp. 1179-1226.
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N’goran J-P. Yao, Zéli B.D., Sylvain Monde, Akoua C. Kra, Kouamé Aka, N’Zalassé, Yassi J. Tea, Yaba L.H., Kouamé L. Duffi. Etude Sedimentologique et Esquisse Paleoenvironnementale des Formations de fresco, 2011.
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   Ronov A.B. Osadochnaya obolochka Zemli [Sedimentary shell of the Earth]. Moscow: Nauka, 1980, 78 p.
   Rukovodstvo po analizu bitumov i rasseyannogo organicheskogo veshchestva gornykh porod [Analysis guide of bitumen and dispersed organic matter of rocks]. Editors V.A. Uspenskiy, K.F. Rodionova, A.I. Gorskaya, A.K. Shishkova. Leningrad, Nedra, 1966, 316 p.
   Safronov P.I. Ershov S.V., Kim N.S., Fomin A.N. Modelirovanie protsessov generatsii, migratsii i akkumulyatsii uglevodorodov v yurskikh i melovykh kompleksakh Enisey Khatangskogo basseyn [Modeling the processes of generation, migration and accumulation of hydrocarbons in the Jurassic and Cretaceous sections of the Yenisey-Khatanga basin]. Geologiya nefti i gaza, 2011, no. 5, pp. 48-55.
   Spravochnik po geokhimii nefti i gaza [Handbook of oil and gas geochemistry]. St. Petersburg: Izd-vo «Nedra», 1998, 576 p.
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   Zelichenko I.A., Parparova G.M., Kunaeva N.T., Koptenko L.Yu., Mishustina L.V. Sravnitel'naya otsenka stepeni katageneticheskoy prevrashchennosti slabopreobrazovannogo capropelevogo ROV po dannym khimicheskikh i termicheskikh metodov issledovaniya [Comparative assessment of the degree of catagenetic transformation of weakly transformed sapropel DOM according to the data of chemical and thermal research methods]. Issledovanie neftegazogeneratsionnykh kharakteristik organicheskogo veshchestva porod termicheskimi metodami, Leningrad: 1988, pp. 77-83.
Stratigraphy and lithology
Section editor – PhD in geology and mineralogy Kirichkova A.I.
Article # 16_2019 submitted on 06/05/2019 displayed on website on 06/18/2019
18 p.
pdf Lithofacial features and formation conditions of the Cenozoic section of the Gran-Lau region - petroleum basin of Cоte-d'Ivoire
The results of the lithofacies analysis of the Cenozoic section of the Cote d'Ivoire petroleum basin, based on the petrographic mineralogical analysis and particles size analysis, are outlined. According to the granulometry data, several histogram were plotted indicating the distribution of sediment grain sizes by fractions, cumulative curves, and a dynamo-genetic diagram of Rozhkov; it made possible to investigate the sedimentation conditions in the Cenozoic time. The descriptions of clastic rocks thin sections, which give valuable information about the composition and history of their formation, were also carried out in this study. As a result of the conducted study, it was established that the Fresco Formations within the Grand-Lau region was developed during the Cenozoic time in various facial conditions of the coastal-marine environment, from the shallow-water bay to littoral conditions.

Keywords: lithofacies analysis, Fresco Cenozoic Formation, Cote d'Ivoire petroleum basin, Gulf of Guinea, Western Africa.
article citation Dicko Mouhamadou B.B., Schekoldin R.A., Dmitrieva T.V. Osobennosti sostava i usloviya formirovaniya kaynozoyskikh otlozheniy regiona Gran-Lau neftegazonosnogo basseyna Kot-d'Ivuar [Lithofacial features and formation conditions of the Cenozoic section of the Gran-Lau region - petroleum basin of Cоte-d'Ivoire]. Neftegazovaya Geologiya. Teoriya I Praktika, 2019, vol. 14, no. 2, available at: http://www.ngtp.ru/rub/2019/16_2019.html
DOI https://doi.org/10.17353/2070-5379/16_2019
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