[ Caractérisation des électro-faciès et faciès lithologique des systèmes fluviatiles du Continental terminal Ivoirien: Cas du forage BNC1 ]
Volume 67, Issue 2, July 2023, Pages 170–181
Ble N’Tayé Christian Arnaud1, Assale Fori Yao Paul2, Gbélé Ouattara3, Dezaï Lemanois Eudes Evrard4, Deneanh Stéphane5, and Mondé Sylvain6
1 UMRI68, Laboratoire du Génie Civil, Géosciences et Sciences Géographiques (CGSG), Institut National Polytechnique Félix Houphouët-Boigny, BP 1093 Yamoussoukro, Côte d’Ivoire
2 PETROCI, Centre d’Analyses et de Recherche (CAR), Abidjan, Côte d’Ivoire
3 Department of Civil Engineering, Geosciences and Geographical Sciences, Institut National Polytechnique Félix Houphouet-Boigny, UMRI 68, Yamoussoukro, Côte d’Ivoire
4 UFR des Sciences de la Terre et des Ressources Minières, Université Félix Houphouët Boigny, Abidjan, Côte d’Ivoire
5 Université Félix Houphouët Boigny, UFR des Sciences de la Terre et des Ressources Minières, Abidjan, Côte d’Ivoire
6 Département de Géosciences Marines, UFR des Sciences de la Terre et des Ressources Minières, Université Félix Houphouët Boigny, Côte d’Ivoire
Original language: French
Copyright © 2023 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The study is a contribution to the characterization of electro-facies and lithologic facies of fluvial systems in Ivorian Continental Terminal by analyzing gamma ray recordings and lithologic percentage data. The lithostratigraphy of the well was reconstructed using Strater software by a combined analysis of GR recordings and litho-granulometric data. The analyzes reveal nine litho-granulometric facies in this well and are mainly composed of coarse sands. These are medium clayey slity sands, coarse clayey slity sands, medium sands, coarse sands, medium gravelly sands, coarse gravelly sands, very coarse gravelly sands, gravels with coarse sands and kaolins. About the electro-facies, the analysis of log GR revealed 21 diagraphic facies (electro-facies) including 4 baselines, 5 lines of positive turns and 8 negative turns and 4 egg shapes. They have been identified in the lithologic facies. The deposit environment of BNC1 well formations is characterized by log shapes such as: cylindrical, funnel, bell and Serrated. These forms reflect fluvial environments such as braided channels and meandering channels (floodplain).
Author Keywords: Fluviatile, electro-facies, logging, lithostratigraphy, channels, Côte d’Ivoire.
Volume 67, Issue 2, July 2023, Pages 170–181
Ble N’Tayé Christian Arnaud1, Assale Fori Yao Paul2, Gbélé Ouattara3, Dezaï Lemanois Eudes Evrard4, Deneanh Stéphane5, and Mondé Sylvain6
1 UMRI68, Laboratoire du Génie Civil, Géosciences et Sciences Géographiques (CGSG), Institut National Polytechnique Félix Houphouët-Boigny, BP 1093 Yamoussoukro, Côte d’Ivoire
2 PETROCI, Centre d’Analyses et de Recherche (CAR), Abidjan, Côte d’Ivoire
3 Department of Civil Engineering, Geosciences and Geographical Sciences, Institut National Polytechnique Félix Houphouet-Boigny, UMRI 68, Yamoussoukro, Côte d’Ivoire
4 UFR des Sciences de la Terre et des Ressources Minières, Université Félix Houphouët Boigny, Abidjan, Côte d’Ivoire
5 Université Félix Houphouët Boigny, UFR des Sciences de la Terre et des Ressources Minières, Abidjan, Côte d’Ivoire
6 Département de Géosciences Marines, UFR des Sciences de la Terre et des Ressources Minières, Université Félix Houphouët Boigny, Côte d’Ivoire
Original language: French
Copyright © 2023 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The study is a contribution to the characterization of electro-facies and lithologic facies of fluvial systems in Ivorian Continental Terminal by analyzing gamma ray recordings and lithologic percentage data. The lithostratigraphy of the well was reconstructed using Strater software by a combined analysis of GR recordings and litho-granulometric data. The analyzes reveal nine litho-granulometric facies in this well and are mainly composed of coarse sands. These are medium clayey slity sands, coarse clayey slity sands, medium sands, coarse sands, medium gravelly sands, coarse gravelly sands, very coarse gravelly sands, gravels with coarse sands and kaolins. About the electro-facies, the analysis of log GR revealed 21 diagraphic facies (electro-facies) including 4 baselines, 5 lines of positive turns and 8 negative turns and 4 egg shapes. They have been identified in the lithologic facies. The deposit environment of BNC1 well formations is characterized by log shapes such as: cylindrical, funnel, bell and Serrated. These forms reflect fluvial environments such as braided channels and meandering channels (floodplain).
Author Keywords: Fluviatile, electro-facies, logging, lithostratigraphy, channels, Côte d’Ivoire.
Abstract: (french)
L’étude menée est une contribution à la caractérisation des électro-faciès et faciès lithologiques des systèmes fluviatiles du Continental Terminal ivoirien par l’analyse des enregistrements du gamma ray et des données de pourcentage lithologique. La lithostratigraphie du puits a été reconstituée à partir du logiciel Strater par une analyse combinée des enregistrements GR, et des données litho-granulométriques. Les analyses révèlent neuf faciès litho-granulométriques dans ce puits et sont majoritairement composés de sables grossiers. Il s’agit des sables moyens silto-argileux, des sables grossiers silto-argileux, des sables moyens, des sables grossiers, des sables moyens graveleux, des sables grossiers graveleux, des sables très grossiers graveleux, des graviers à sables grossiers et des kaolins. Au niveau des électro-faciès, l’analyse du log GR a révélé 21 faciès diagraphiques (électro-faciès) dont 4 lignes de bases, 5 lignes de tournures positives et 8 tournures négatives et 4 formes en œuf. Ils ont été identifiés dans les faciès lithologiques. L’environnement de dépôt des formations du puits BNC1 est caractérisé par les formes diagraphiques tels que: cylindriques, entonnoirs, cloches et dentelées. Ces formes traduisent des environnements fluviatiles de types chenaux anastomosés et chenaux méandriformes (plaine d’inondation).
Author Keywords: Fluviatile, électro-faciès, diagraphique, lithostratigraphie, chenaux, Côte d’Ivoire.
How to Cite this Article
Ble N’Tayé Christian Arnaud, Assale Fori Yao Paul, Gbélé Ouattara, Dezaï Lemanois Eudes Evrard, Deneanh Stéphane, and Mondé Sylvain, “Electro and lithological facies characterization of the fluvial systems of the Ivorian Continental Terminal: Case of BNC1 drilling,” International Journal of Innovation and Scientific Research, vol. 67, no. 2, pp. 170–181, July 2023.
