International Journal of Geosciences, 2023, 14, 450-466 https://www.scirp.org/journal/ijg ISSN Online: 2156-8367 ISSN Print: 2156-8359 DOI: 10.4236/ijg.2023.145024 May 31, 2023 450 International Journal of Geosciences Integrated Modelling and Reservoir Characterization of Ataga Field, Niger Delta Basin, Nigeria Jerry Danwazan 1,2* , Kehinde Joseph Egunjobi 2,3 , Richard Olorunfemi Akinwande 2 1 Department of Geology and Mining, Nasarawa State University, Keffi, Nigeria 2 Department of Geology, University of Ibadan, Ibadan, Nigeria 3 Pan African University of Life and Earth Science Institute, Ibadan, Nigeria Abstract Integrated modelling, well correlation and petrophysical analysis were per- formed to characterize the reservoirs for optimum hydrocarbon correlation using 3-D seismic reflection data and suites of well logs from Ataga 5, 7, 10 and 11 wells respectively in Ataga field, shallow offshore, Niger Delta Basin, Nigeria. The study revealed the presence of two viable hydrocarbon bearing reservoirs, AT1 and AT2 and the average values of porosity, permeability, water saturation, hydrocarbon saturation, Net to Gross (NTG) and volume of shale are in the ranges of 15% - 77%, 44.5% - 75.5%, 25.5% - 85%, 15% - 75.5%, 0.70 - 0.88 and 0.11 - 0.38 respectively which goes further to show that the both reservoirs have fair characteristics that are suggestive of the presence of hydrocarbon accumulation. It can therefore be deduced that the permea- bility values are reflective of fair interconnectivity of pore spaces of sands within the well areas and their ability to transmit fluids, the depth and depth structural map generated for the horizons and structures shows that the most dominant trapping mechanism in the area under study is the crescentic growth fault and the rollover anticlines trending in the Northwest-Southeast direction and from the volumetric analysis. It can be deduced that the reco- verable gas for AT1 and AT2 reservoirs is 2 × 10 6 mscf and 6 × 10 6 mscf re- spectively. Keywords Niger Delta, Growth Faults, Rollover Anticlines, Reservoirs, Hydrocarbon Saturation How to cite this paper: Danwazan, J., Egunjobi, K.J. and Akinwande, R.O. (2023) Integrated Modelling and Reservoir Cha- racterization of Ataga Field, Niger Delta Basin, Nigeria. International Journal of Geos- ciences, 14, 450-466. https://doi.org/10.4236/ijg.2023.145024 Received: April 17, 2023 Accepted: May 28, 2023 Published: May 31, 2023 Copyright © 2023 by author(s) and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/ Open Access