Evaluation of Reservoir’s Petrophysical Parameters, Niger Delta, Nigeria

  • Authors

    • Ubong Essien Department of Science Technology, Akwa Ibom State Polytechnic, Ikot Osurua, Akwa Ibom State
    • Akaninyene Akankpo University of Uyo, Uyo, Akwa Ibom State, Nigeria
    • Okechukwu Agbasi University of Uyo, Uyo, Akwa Ibom State, Nigeria
    2017-04-11
    https://doi.org/10.14419/ijag.v5i1.7456
  • Bulk Volume of Water, Lithology, Porosity, Reservoir, Volume of Shale.

  • Abstract

    Petrophysical analysis was performed in two wells in the Niger Delta Region, Nigeria. This study is aimed at making available petrophysical data, basically water saturation calculation using cementation values of 2.0 for the reservoir formations of two wells in the Niger delta basin. A suite of geophysical open hole logs namely Gamma ray; Resistivity, Sonic, Caliper and Density were used to determine petrophysical parameters. The parameters determined are; volume of shale, porosity, water saturation, irreducible water saturation and bulk volume of water. The thickness of the reservoir varies between 127ft and 1620ft. Average porosity values vary between 0.061 and 0.600; generally decreasing with depth. The mean average computed values for the Petrophysical parameters for the reservoirs are: Bulk Volume of Water, 0.070 to 0.175; Apparent Water Resistivity, 0.239 to 7.969; Water Saturation, 0.229 to 0.749; Irreducible Water Saturation, 0.229 to 0.882 and Volume of Shale, 0.045 to 0.355. The findings will also enhance the proper characterization of the reservoir sands.

  • References

    1. [1] Adesida, A. A., Reijers T. J. A. and Nwajide C. S. (1997). Sequence Stratigraphic framework of the Niger Delta. Paper presented at the AAPG international conference and exhibition, Vienna, Austria.

      [2] Aigbedion, I., (2007). Reservoir Fluid Differentiation case study from the Oredo Field. International, Journal of Physical Sciences, 2 (6): pp. 144-148.

      [3] Alger, R. P. (1980). Geological use of wireline logs: in Developments in Petroleum Geology – 2, G.D Hobson ea. Applied Science Publication London pp.207-272.

      [4] Archie, G. E. (1942). Electrical Resistivity Log as an Aid in Determining Some Reservoir Characteristics. Trans. AIME., 146(1): 54-62. https://doi.org/10.2118/942054-G.

      [5] Asquith, G. and Gibson. C. (1982). Basic Well Log Analysis for Geologists: A. A. P. G Publication, Tulsa, p. 216.

      [6] Chapman, R. E. (1983). The logging of Boreholes: Petroleum Geology, Concise study, Elsevier, Amsterdam, pp.107-157.

      [7] Ejedawe, J. E. (1989). The Eastern Niger Delta Geological Evolution and Hydrocarbon Occurrences. SPDC Internal Report, Exploration Note 89. 002.

      [8] Falebita, B. (2003). Deep drilling in the Niger Delta. Nape bulletin, 10 (1). p. 8

      [9] Merkel, R. H., (1979). Well Log Formation Evaluation: A. A. P. G. Continuing Education Series, p. 14, 82.

      [10] Obaje, N. G. (2005). Fairways and Reservoir Potential of Pliocene – Recent sands in the Shallow Offshore Niger Delta. J Mining Geol. 40: pp. 25–38.

      [11] Okechukwu, E. A, Namdie, I. and Ibuot, J. (2013). Estimation of Water Saturation using modeled equation and Archie’s equation from wire line logs, Niger Delta, Nigeria. Journal of Applied Physics (IOSR JAP). 3(4): pp. 66 -71.

      [12] Pirson, S. J., (1963).Handbook of Well Log Analysis. Englewood Cliffs, N. J.,

      [13] Robinson, E. S., (1988). Basic exploration geophysics, publishers: John Wiley and Sons Incorporation, pp. 501-539.

      [14] Schlumberger (1989). Log Interpretation Principles/Applications, Well Services, Houston.

      [15] Weber, K. J., (1972). Petroleum Geology of the Niger Delta. 9th World Petroleum Congress Tokyo, Japan. 2:207-221.

      [16] Welex, (1978). An Introduction to Well Log Analysis: Houston, Texas, p.46.

      [17] Whiteman, I. K. (1982). Fundamental of Reservoir Engineering, 4th ed. Norman, University of Oklahoma Press. p. 426

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  • How to Cite

    Essien, U., Akankpo, A., & Agbasi, O. (2017). Evaluation of Reservoir’s Petrophysical Parameters, Niger Delta, Nigeria. International Journal of Advanced Geosciences, 5(1), 19-25. https://doi.org/10.14419/ijag.v5i1.7456

    Received date: 2017-03-08

    Accepted date: 2017-04-06

    Published date: 2017-04-11