Abstract
The Akinbo Formation comprises a sequence of mostly dark, pale-greenish grey, laminated shale, slightly glauconitic shale, sandy shale with subordinate claystone lenses. Selected subsurface samples of the shaly facies as penetrated by Akinside 1582 well in eastern Dahomey basin, were investigated by sedimentological, mineralogical and geochemical parameters to ascertain the hydrocarbon potential and deduce the influence of variations of clay mineral indicators on the prospect.
Values of total organic carbon (TOC) range from 0.46 to 1.98wt. % while the soluble organic matter (SOM) ranges from 71 to 1940 ppm and portrays that the organic matter is fair to good and adequate. Bitumen ratios have values of 15.25 to 98.98mg ext/gTOC which suggest that the sediments are immature to marginally mature. Average major elemental composition indicates 68.08% SiO] 17.55% AlcO." 4.07%KP, 1.82%CaO, 1.57%Nap, 1.29%MgO,· 0.62%Fe,03 and 0.50%MnO. A moderate increase in KcO from 2.26 to 4.92wt. % with depth was observed and this corresponds with increase in illite content. Equally, an increase in AI20/ (Fe203 + MgO) ratio from 7.27 to 22.07 with depth points to increasing diagenetic conditions.
, N , Ezeh, M , and, F & A., A (2021). Aspects of Source Rock Evaluation and Diagenetic History of the Akinbo' Shale Eastern Dahomey Basin, Southwestern Nigeria. Afribary. Retrieved from https://afribary.com/works/aspects-of-source-rock-evaluation-and-diagenetic-history-of-the-akinbo-shale-eastern-dahomey-basin-southwestern-nigeria
, Nton et. al. "Aspects of Source Rock Evaluation and Diagenetic History of the Akinbo' Shale Eastern Dahomey Basin, Southwestern Nigeria" Afribary. Afribary, 17 May. 2021, https://afribary.com/works/aspects-of-source-rock-evaluation-and-diagenetic-history-of-the-akinbo-shale-eastern-dahomey-basin-southwestern-nigeria. Accessed 26 Apr. 2024.
, Nton, Matthew Ezeh , Francis And and Anthony A. . "Aspects of Source Rock Evaluation and Diagenetic History of the Akinbo' Shale Eastern Dahomey Basin, Southwestern Nigeria". Afribary, Afribary, 17 May. 2021. Web. 26 Apr. 2024. < https://afribary.com/works/aspects-of-source-rock-evaluation-and-diagenetic-history-of-the-akinbo-shale-eastern-dahomey-basin-southwestern-nigeria >.
, Nton , Ezeh, Matthew , And, Francis and A., Anthony . "Aspects of Source Rock Evaluation and Diagenetic History of the Akinbo' Shale Eastern Dahomey Basin, Southwestern Nigeria" Afribary (2021). Accessed April 26, 2024. https://afribary.com/works/aspects-of-source-rock-evaluation-and-diagenetic-history-of-the-akinbo-shale-eastern-dahomey-basin-southwestern-nigeria