Reservoir Characteristics Estimation of the Alakiri Field, Niger Delta, Nigeria, Using Well Log Data
DOI:
https://doi.org/10.63561/japs.v3i1.1179Keywords:
Reservoir, Porosity, Permeability, Alakiri Field, Fluid SaturationAbstract
In order to mitigate the problems associated with facies within tight reservoirs, this study estimates the petrophysical properties of the Alakiri field using well log data and Petrel software. Gamma ray and resistivity logs were integrated to delineate and correlate two probable hydrocarbon-bearing zones. Sand and shale lithofacies were the two lithologies delineated with varying intercalation. Porosity, permeability, shale volume, fluid saturations, and net pay thickness were the estimated petrophysical properties within the reservoir intervals. Results show that the reservoirs were located at depths 3300-3445m and 3305-3485m for wells OTIG-2 and OTIG-7, respectively. From the analysis of the findings, the reservoir B interval has the best petrophysical properties and hence, better hydrocarbon potential. This is due to its relatively high average porosity (20%), permeability (206 mD), and hydrocarbon saturation (0.7), as well as less volume of shale (0.3) and water saturation (0.3). Again, the estimated porosity >12% and permeability <1000mD classified the reservoir as a tight reservoir. Furthermore, due to the average NTG value of 0.7 and volume of shale of 0.3, with high hydrocarbon saturation of 0.7 and water saturation not more than 0.3, the reservoir is said to be a clean sand reservoir. Thus, reservoir B possesses the best petrophysical property deposition in this field. It is recommended that the findings of this study be adopted during field planning and development. Again, a further investigation deploying the integration of well and seismic data sets should be undertaken to ascertain the general lithostratigraphy of the entire field.
References
Adeyemi, K. D. (2018). 3D seismic and petrophysical analysis in the characterization of oil play in “HARK” field, Niger Delta (Unpublished B.Tech thesis). Federal University of Akure.
Adiela, P. U., & Okumoko, P. D. (2019). Petrophysical properties of “Y Wells” Niger Delta petroleum field, Nigeria. Mediterranean Journal of Basic and Applied Science, 2(1), 49–60.
Aigbogun, C. O., Mujakperuo, B. J. O., & Utah, S. (2020). Reservoir characterization of an onshore X-field, Niger Delta, Southern Nigeria, using well logs data. International Journal of Science Inventions Today, 9(1), 1–14.
Ajisafe, Y. C., & Ako, B. D. (2013). 3-D seismic attributes for reservoir characterization of “Y” field, Niger Delta. IOSR Journal of Applied Geology and Geophysics, 1, 23–31.
Ameloko, A. A., & Owoseni, A. M. (2015). Hydrocarbon reservoir evaluation of X-field, Niger Delta using seismic and petrophysical data. International Journal of Innovative Science Research, 15(1), 193–201.
Asadu, A. N., Omor-Irabor, O. O., & Ibe, K. A. (2015). Source rock characterization of Agbada Formation in Well Z, offshore Niger Delta. International Journal for Research in Emerging Science and Technology, 2.
Bayowa, O. G., Adagunodo, T. A., Olaleye, O. A., Adeleke, A. E., Usikalu, M. R., & Akinwumi, S. A. (2020). Hydrolithological investigation for near-surface aquifers within Lekki Peninsula, Lagos, Southwestern Nigeria. Nature Environment and Pollution Technology, 19(2).
Doust, H., Omatsola, E., Edwards, J. D., & Santogrossi, P. A. (1990). Divergent/passive margin basins. AAPG Memoir, 48, 239–248.
Ekone, N. O., Ehirim, C. N., & Nwosu, J. I. (2020). Analytical approach to reservoir property evaluation of a field in Niger Delta. International Journal of Scientific Research and Engineering Development, 1(3), 156–165.
Kalu, C. G., Obiadi, I. I., Amaechi, P. O., & Ndeze, C. K. (2020). Petrophysical analysis and reservoir characterization of Emerald Field, Niger Delta Basin, Nigeria. Asian Journal of Earth Sciences, 13, 21–36.
Lawson, I. D., & Balogun, A. O. (2023). Reservoir characterization using petrophysical evaluation of W-field, onshore Niger Delta. Asian Journal of Physical and Chemical Sciences, 11(2), 9–23.
Mahdi, Z. A., & Farman, G. M. (2023). A review on models for evaluating rock petrophysical properties. Iraqi Journal of Chemical and Petroleum Engineering, 24(1), 125–136.
Nton, M. E., & Esan, T. B. (2010). Sequence stratigraphy of EMI fields, offshore Eastern Niger Delta, Nigeria. European Journal of Scientific Research, 44(1), 115–132.
Ogbuagu, K. M., & Igbor, K. C. (2025a). Well performance evaluation using reservoir property distribution of X-onshore oil field located in Niger Delta, Nigeria. Discover Geoscience, 3(1), 1–10.
Ogbuagu, K. M., Ehirim, C. N., & Dagogo, T. (2025). Geomechanical characterization of a clastic reservoir in parts of Niger Delta, Nigeria. Discover Geoscience, 3(1), 11.
Olawole, O. O., Janet, O. A., Christiana, P. N., Ekeng, O. M., & Taiwo, O. B. (2018). Reservoir description and characterization of Eni Field, offshore Niger Delta, Southern Nigeria. Journal of Petroleum Exploration and Production Technology, 8(2), 381–397.
Omudu, L. M., & Ebeniro, J. O. (2005). Cross-plotting of rock properties for fluid discrimination using well data in offshore Niger Delta. Nigerian Journal of Physics, 17(1), 16–20.
Opiriyabo, I. H., & Akpan, M. J. (2024). Reservoir quality and performance assessment using well logs from a producing Niger Delta field. Malaysian Journal of Geosciences, 8(2), 94–100.
Reijers, T. J. A. (2011). Stratigraphy and sedimentology of the Niger Delta.
Ulasi, A. I., Onyekuru, S. O., & Iwuagwu, C. J. (2012). Petrophysical evaluation of Uzek Well using well log and core data, offshore depobelt, Niger Delta, Nigeria.
Whiteman, A. J. (1982). Nigeria: Its petroleum geology, resources and potential.
Downloads
Published
How to Cite
Issue
Section
