Static Reservoir Modeling Using Well Log and 3-D Seismic Data in a KN Field, Offshore Niger Delta, Nigeria


This study focuses on the application of 3D static model using 3-D seismic and well log data for proper optimization and development of hydrocarbon potential in KN field of Niger Delta Province. 3D Seismic data were used to generate the input interpreted horizon grids and fault polygons. The horizon which cut across the six wells was used for the analysis and detailed petrophysical analysis was carried out. Structural and property modeling (net to gross, porosity, permeability, water saturation and facies) were distributed stochastically within the constructed 3D grid using Sequential Gaussian Simulation and Sequential Indicator Simulation algorithms. The reservoir structural model show system of different oriented growth faults F1 to F6. Faults 1 and Fault 4 are the major growth faults, dipping towards south-west and are quite extensive. A rollover anticline formed as a result of deformation of the sediments deposited on the downthrown block of fault F1. The other faults (2, 3, 5 and 6) are minor fault (synthetic and antithetic). The trapping mechanism is a fault assisted anticlinal closure. Results from well log analysis and petrophysical models classified sand 9 reservoir as a moderate to good reservoir in terms of facies, with good porosity, permeability, moderate net to gross and low water saturation. The volumetric calculation of modeled sand 9 horizon reveals that the (STOIIP) value at the Downthrown and Ramp segment are 15.7 MMbbl and 3.8 MMbbl respectively. This implies that the mapped horizon indicates hydrocarbon accumulation in economic quantity. This study has also demonstrated the effectiveness of 3-D static modeling technique as a tool for better understanding of spatial distribution of discrete and continuous reservoir properties, hence, has provided a framework for future prediction of reservoir performance and production behavior of sand 9 reservoir. However, more horizontal wells should be drilled to enhance optimization of the reservoir.

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Adeoti, L. , Onyekachi, N. , Olatinsu, O. , Fatoba, J. and Bello, M. (2014) Static Reservoir Modeling Using Well Log and 3-D Seismic Data in a KN Field, Offshore Niger Delta, Nigeria. International Journal of Geosciences, 5, 93-106. doi: 10.4236/ijg.2014.51011.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] K. C. Short and A. J. Stauble, “Outline of Geology of Niger Delta,” American Association of Petroleum Geologists Bulletin, Vol. 51, No. 1, 1967, pp. 761-779.
[2] O. S. Adegoke, “High Resolution Biostratigraphy, Sequence Stratigraphy and 3-D Modeling Indispensable Tools for E & P Activities in the New Millennium,” Nigerian Association of Petroleum Explorationist Bulletin, Vol. 16, No. 1, 2000, pp. 46-65.
[3] K. J. Weber and E. M. Daukoru, “Petroleum Geology of the Niger Delta,” Proceedings of the Ninth World Petroleum Congress, Geology, Vol. 2, No. 1, 1975, pp. 210-221.
[4] F. J. Lucia and G. E. Fogg, “Geologic/Stochastic Mapping of Heterogeneity in a Carbonate Reservoir,” Journal of Petroleum Technology, Vol. 42, No. 1, 1990, pp. 1298-1303.
[5] I. W. Lake, H. B. Carrol and T. C. Wesson, “Reservoir Characterization,” Academic Press, San Diego, 1991.
[6] P. F. Worthington, “Reservoir Characterization at the Mesoscopic Scale,” In: I. W. Lake, H. B. Carrol and T. C. Wesson, Eds., Reservoir characterization, Academic Press, Waltham, 1991, pp. 123-165.
[7] H. H. Haldersen and E. Dasleth, “Challenges in Reservoir Characterization,” AAPG Bulletin, Vol. 77, No. 1, 1993, pp. 541-551.
[8] D. D. Patrick, S. S. Gerilyn and P. C. John, “OutcropBase Reservoir Characterization: A Composite Phylloid-Algal Mound, Western Orogrande Basin (New Mexico),” AAPG Bulletin, Vol. 86, No. 1, 2002, pp. 780.
[9] H. Sheikhzadeh, “3D Integrated Static Modelling Using Geostatistical Methods in Asmari Reservoir, Marun Oil Field, Iran,” 14th International Oil, Gas and Petrochemical Congress, Tehran, 1389, pp. 5-30
[10] L. Fabio, P. Gerardo, F. Miranda de Oliveira, C. Gonzalo, M. T. Kevin, S. William, L. A. B. Jose and C. Fabio, “Detailed Facies Definition and 3D Static Model: Reservoir Management of the Eocene Producing Units in Block X of the Talara Basin in Northwest Peru,” Society of Petroleum Engineer, Latin American and Caribbean Petroleum Engineering Conference, Lima, 1-3 December 2010, pp. 280-320.
[11] H. Doust and E. Omatsola, “Niger Delta,” In: J. D. Edwards and P. A. Santogrossi, Eds., Divergent/Passive Margin Basins, AAPG Memoir, Vol. 48, No. 1, 1990, pp. 239-248.
[12] K. J. Weber, “Sedimentological Aspects of Oil Fields in the Niger Delta,” Geologic en Mijnbouw, Vol. 50, No. 1, 1971, pp. 559-576.
[13] T. J. A. Reijers, S. W. Peters and C. S. Nwajide, “The Niger Delta Basin,” In: R. C. Selley, Ed., African Basin-Sedimentary Basin of the World 3,” Elsevier Science, Amsterdam, 1997, pp. 151-172.
[14] T. R. Klett, T. S. Ahlbrandt, J. W. Schmoker and J. L. Dolton, “Ranking of the World’s Oil and Gas Provinces by Petroleum Volumes,” Geological Survey Open-File Report-97-463, CD-ROM, 1997.
[15] Microsoft Encarta, “Reference Library Premium,” DVD-ROM, 2009.
[16] J. O. Etu-Efeotor, “Fundamental of Petroleum Geology,” Paragraphics, Port Harcourt, 1997.
[17] P. F. Worthington, “The Evolution of Shaly-Sand Concepts in Reservoir Evaluation,” The Log Analyst, Vol. 26, No. 1, 1985, pp. 23-40.
[18] R. Bateman, “Open Hole Log Analysis and Formation Evaluation” Texas Exploration and Production Technology Division, Houston, 1990, pp. 32-74.
[19] J. M. Orife and A. A. Avbovbo, “Stratigraphy and the Unconformity Traps in Niger Delta,” American Association of Petroleum Geologist Memoire, Vol. 32, No. 1, 1982, pp. 265.
[20] D. K. Larue and H. Legare, “Flow Units, Connectivity and Reservoir Characterization in a Wave-Dominated Deltaic Reservoir, Meren Reservoir, Nigeria,” American Association of Petroleum Geologist Bulletin, Vol. 88, No. 1, 2004, pp. 303-324.
[21] D. N. Obiora, “Comparative Study of Graphical Methods and Velocity Analysis of 2D Seismic Reflection Data with Application to Niger Delta,” Pacific Journal of Science and Technology, Vol. 7, No. 2, 2006, pp. 204-210.
[22] I. Dean, “Reservoir Engineering for Geologist,” Part 3— Volumetric Estimation, Reservoir No. 11, 2007, pp. 21-23.

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