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• W3196804907 abstract "PreviousNext No AccessFirst International Meeting for Applied Geoscience & Energy Expanded AbstractsEvaluation of CO2 storage capacity of saline aquifers in OSCAR field, Niger Delta, NigeriaAuthors: Wasiu Olanrewaju RajiLanre RajiSharafadeen Omotayo BelloTaiye Olushola AdeoyeWasiu Olanrewaju RajiDepartment of Geophysics, University of IlorinSearch for more papers by this author, Lanre RajiDepartment of Geophysics, University of IlorinSearch for more papers by this author, Sharafadeen Omotayo BelloDepartment of Geophysics, University of IlorinSearch for more papers by this author, and Taiye Olushola AdeoyeDepartment of Geophysics, University of IlorinSearch for more papers by this authorhttps://doi.org/10.1190/segam2021-3582703.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail AbstractA combination of Petrophysical logs from five representative wells and 3D seismic volume acquired in OSCAR Filed, Niger Delta, Nigeria, has been analysed to study the carbon-dioxide (CO2) sequestration potential of ‘OSCAR Field’ The aim of the study was to estimate the volume of CO2 that can be potentially stored in the aquifers and evaluate the risk of CO2 leakages from the cap rock. The sand aquifers were correlated across the five wells to evaluate their thicknesses and lateral extent. Porosity, permeability, formation water resistivity, and net sand thickness were estimated across the five wells. The Horizons corresponding to the top of the aquifers were mapped, time and depth structured maps were generated for structural analysis and volumetric estimations. The risk of CO2 leakages through sealing layers was evaluated in terms of cap rock integrity and pore pressure sealing mechanism. Results of the study showed that the four aquifers namely, L20, N30, M40, and P50, are laterally extensive across the five wells and have thicknesses ranging from 14 to 352 m. The individual CO2 storage capacity of L20, M30, N40, and P50 aquifers was estimated to be 6.97x1010 tons, 1.48x1010 tons, 7.78x109 tons and 1.49x1010 tons, respectively. The combined aquifer storage capacity was estimated to be 1.07x1011 tons. The sealing layers were found to be moderately ductile, sufficiently thick for CO2 storage caprock, and laterally extensive covering the aquifer surface area. The cap rocks are categorized to have low risk potential for CO2 leakages. The study concluded that the aquifers are good and safe for CO2 sequestration, have a low risk of leakages. In terms of CO2 volume and risk of leakages, the study ranked L20 as the best aquifers.Note: This paper was accepted into the Technical Program but was not presented at IMAGE 2021 in Denver, Colorado.Keywords: aquifer, well-log interpretation, seismic attributes, 3D, sandstonePermalink: https://doi.org/10.1190/segam2021-3582703.1FiguresReferencesRelatedDetails First International Meeting for Applied Geoscience & Energy Expanded AbstractsISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2021 Pages: 3561 publication data© 2021 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 01 Sep 2021 CITATION INFORMATION Wasiu Olanrewaju Raji, Lanre Raji, Sharafadeen Omotayo Bello, and Taiye Olushola Adeoye, (2021), Evaluation of CO2 storage capacity of saline aquifers in OSCAR field, Niger Delta, Nigeria, SEG Technical Program Expanded Abstracts : 3349-3353. https://doi.org/10.1190/segam2021-3582703.1 Plain-Language Summary Keywordsaquiferwell-log interpretationseismic attributes3DsandstonePDF DownloadLoading ..." @default.
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• W3196804907 title "Evaluation of CO2 storage capacity of saline aquifers in OSCAR field, Niger Delta, Nigeria" @default.
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