1 Department of Geoscience, Federal Polytechnic of Oil and Gas Bonny, School of Applied Sciences, Bonny, Rivers State, Nigeria.
2 Department of Geology, University Of Portharcourt, Faculty of Sciences, Port Hacourt, Rivers state, Nigeria.
Research Article
World Journal of Advanced Research and Reviews, 2023, 20(02), 126–131
Received on 18 September 2023; revised on 29 October 2023; accepted on 01 November 2023
Shale cuttings from the K-Well (Akiri) in the Niger Delta have been analysed for their mineralogical and geochemical compositions. Analysis of the 2m portion from the 2183, to 3,720m stratigraphic period was performed using X-ray diffraction, inductively coupled plasma optical emission (ICP-OES), and mass spectrometry (ICP-MS). Many types of clay minerals exist, although kaolinite and chlorite predominate. From 3250-3720m in altitude, the illite/smectite composition shifts from a phase with 32% illite layers to a phase with 82% illite layers. Shallow shales had a drop in kaolinite concentration (from 22-16%) whereas deep shales saw a decline (from 29-22%). Unlike chlorite and feldspar, whose abundance do not rise with depth, but quartz does. In all samples, calcite may be found in minute quantities. In this case, the pore water is the source of the potassium. Total organic carbon (TOC) readings obtained from the shale samples demonstrate a high concentration of organic matter in the rock.
Mineralogy; Geochemical; Stratigraphy, Diffraction; Spectrometer
Preview Article PDF
Chikodili Judith Anameje, Michael M. Inyang, Igboke John Elebe and Sonia Shailong. Mineralogical studies of tertiary shales from k-well Akiri field, Niger delta. World Journal of Advanced Research and Reviews, 2023, 20(2), 126-131. Article DOI: https://doi.org/10.30574/wjarr.2023.20.2.2207