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3-D Seismic Interpretation and Volumetric Estimation of “Osaja Field” Niger Delta, Nigeria

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3-D seismic interpretation and petrophysical analysis of the Osaja Field, Niger Delta, was carried out with aim of carrying out a detailed structural interpretation, reservoir characterization and volumetric estimation of the field. Four wells were correlated across the field to delineate the lithology and establish the continuity of reservoir sand as well as the general stratigraphy of the area. The petrophysical analysis carried out, revealed two sand units that are hydrocarbon bearing reservoirs (Sand_A and Sand_B).The spatial variation of the reservoirs were studied on a field wide scale using seismic interpretation. Time and depth structural maps generated were used to establish the structural architecture/geometry of the prospect area of the field. The depth structure map revealed NE-SW trending anticlinal structures with F5 and F6 as faults assisted closures to the reservoir. Furthermore, reservoir parameters such as net pay, water saturation porosity, net-to-gross etc, were derived from the integration of seismic and well log data. The structural interpretation on the 3-D seismic data of the study area revealed a total of seven faults ranging from synthetic to antithetic faults. The petrophysical analysis gave the porosity values of the reservoir Sand_A ranging from 18.1 - 20.3% and reservoir Sand_B ranging from 13.1-14.9% across the reservoir. The permeability values of reservoir Sand_A ranging from 63-540md and reservoir Sand_B ranging from 18-80md hence there is decrease in porosity and permeability of the field with depth.The net-to-gross varies from 22.1% to 22.4% in Rerservoir Sand A to between 5.34- 12% for Rerservoir Sand _A while Sw values for the reservoirs ranges from 38-42% in well 2 to about 68.79-96.06% in well 11. The result of original oil in place for all the wells calculated revealed that well 2 has the highest value with 9.3mmbls. These results indicate that the reservoirs under consideration have a poor to fair hydrocarbon (oil) prospect.


International Letters of Natural Sciences (Volume 59)
L. J. Osaki et al., "3-D Seismic Interpretation and Volumetric Estimation of “Osaja Field” Niger Delta, Nigeria", International Letters of Natural Sciences, Vol. 59, pp. 14-28, 2016
Online since:
Oct 2016

[1] D.A. Cooke, T. Muryanto, Reservoir Quantification of B Field, Java Sea via Statistical and Theoretical Methods, Submitted for presentation at the SEG International Exposition and Meeting, Houston, TX USA, (1999).

[2] G.A. Dorn, Modern 3-D seismic interpretation, The Leading Edge. 17(9) (1998) 1262–1272.

[3] T.A. Jones, S.J. Helwick, Methods of generating 3-D Geologic models incorporating geologic and geophysical constraints, United States Patent, USOO5838634A., Nov, (1998).

[4] D. Gao, Volume texture extraction for 3-D seismic visualization and interpretation, Geophysics. 68 (2003) 1294-1302.

[5] D. Gao, Texture model regression for effective feature discrimination: Application to seismic facies visualization and interpretation, Geophysics. 69 (2004) 958- 967.

DOI: 10.1190/1.1778239

[6] S. Chopra, K. Marfurt, Seismic Attributes – a promising aid for geologic prediction, CSEG RECORDER, Special Edition. (2006) 111-121.

[7] M.T. Taner, F. Koehler, R. E. Sheriff, Complex seismic trace analysis, Geophysics. 44 (1979) 1041–1063.

[8] M. Bahorich, S. Farmer, 3-D seismic discontinuity for faults and stratigraphic features: The coherence cube, The Leading Edg. e 14 (1995) 1053–1058.

[9] K.J. Marfurt, R.L. Kirlin, 3-D broad band estimates of reflector dip and amplitude, Geophysics. 65 (2000) 304–320.

DOI: 10.1190/1.1444721

[10] G. Partyka, J. Gridley, J. Lopez, Interpretational applications of spectral decomposition in reservoir characterization, The Leading Edge. 18 (1999) 353–360.

[11] K.J. Weber, Hydrocarbon distribution patterns in Nigerian growth fault structures controlled by structural style and stratigraphy, Journal of Petroleum Science and Engineering. 1 (1987) 91-104.

[12] B.D. Evamy et al., Hydrocarbon habitat of Tertiary Niger Delta, American Association of Petroleum Geologists Bulletin. 62 (1978) 277-298.

[13] H. Xiao, J. Suppe, Origin of Rollover, American Association of Petroleum Geologists Bulletin. 76 (1992) 509-229.

[14] K.J. Weber, E.M. Daukoru, Petroleum geology of the Niger Delta, Proceedings of the Ninth World Petroleum Congress, Geology: London, Applied Science Publishers, Ltd. 2 (1975) 210-221.

[15] A.I. Opara, Prospectivity Evaluation of Usso, Field, Onshore Niger Delta Basin, Using 3-D Seismic and Well Log Data, Petroleum and Coal. 52(4) (2010) 307-315.

[16] A.I. Opara, U.O. Anyim, V.I. Nduka, 3D Seismic Interpretation and Structural Analysis of Ossu, Oil Field, Northern Depobelt, Onshore Niger Delta, Nigeria, Pacific Journal of Science and Technology. 12(1) (2011) 502-509.

[17] E. M. Hamed, J.M. Kurt, Structural interpretation of the Middle Frio Formation using 3-D seismic and well logs: An example from the Texas Gulf Coast of the United States, The Leading Edge. 27(7) (2008) 840-854.

DOI: 10.1190/1.2954023

[18] R.W. Wiener, J.A. Helwig, J. Rongpei, Seismic Interpretation and Structural Analysis of the Rifted Thrust Belt, Jianghan Basin, China, The Leading Edge. 60(8) (1997) 1177–1183.

[19] R. Esedo, B. Ozumba, New Opportunity Identification in a Mature Basin: The Oguta North Prospect in OML 20, Niger Delta, Society of Petroleum Engineers Conference Proceedings, 28th Annual SPE International Conference and Exhibition, Abuja, August 2-4, 2004, Paper SPE 98812.

DOI: 10.2118/98812-ms

[20] S.O. Nwachukwu, The tectonic evolution of the southern portion of the Benue Trough, Nigeria: Geology Magazine. 109 (1972) 411-419.

[21] K.C. Short, A.J. Stäuble, Outline of geology of Niger Delta, American Association of Petroleum Geologists Bulletin. 51 (1965) 761-779.

[22] R.A. Reyment, Aspects of the geology of Nigeria, university of Ibadan press, Nigeria, (1965).

[23] H. Doust, E. Omatsola, Niger Delta, in J.D. Edwards, P. A . Santogrossi, eds., Divergent/passive Margin Basins, AAPG Memoir 48: Tulsa, American Association of Petroleum Geologists. (1990) 239-248.

[24] A.A. Avbovbo, Tertiary lithostratigraphy of Niger Delta, American Association of Petroleum Geologists Bulletin. 62 (1978) 295-300.

[25] F.T. Beka, M.N. Oti, The distal Offshore Niger Delta: frontier prospects of a mature petroleum province, in Oti, M.N., Postma, G., eds., Geology of Deltas: Rotterdam, A.A. Balkema. (1995) 237-241.

[26] J.E. Ejedawe, Patterns of incidence of oil reserves in Niger Delta Basin, American Association of Petroleum Geologists. 65(1981) 1574-1585.

[27] C.M. Ekweozor et al., Preliminary organic geochemical studies of samples from the Niger Delta, Nigeria: Part 1, analysis of crude oils for triterpanes, Chemical Geology. 27 (1979) 11-28.

[28] P.I. Merki, Structural Geology of Cenozoic Niger Delta, First African Regional Geological Conference Proceedings, Ibadan University Press, Ibadan, Nigeria. (1971) 251 –266.

[29] A.J. Whiteman, Nigeria: Its Petroleum Geology: Resources and Potential, volume 1-2. Graham and Trottan, London, UK, (1982).

[30] A.O. Owoyemi, B.J. Willis, Depositional Patterns Across Syndepositional Normal Faults, Niger Delta, Nigeria, Journal of Sedimentary Research. 76(2) (2006) 346-363.

[31] F. Bilotti, J.H. Shaw, Deepwater Niger Delta Fold and Thrust Belt modeled as a Critical – Taper Wedge: The Influence of Elevated Basal Fluid Pressure on Structural Styles, AAPG Bulletin. 89(11) (2005) 1475-1491.

[32] K.J. Weber, Hydrocarbon Distribution Patterns in Nigerian Growth Fault Structures Controlled by Structural Style and Stratigraphy, Journal of Petroleum Science and Engineering. 1 (1987) 91-104.

DOI: 10.1016/0920-4105(87)90001-5

[33] M.T. Olowokere, S.J. Abe, Structure and Facies Development Resulting From Neogene Gravity Tectonics and Depositional Processes: Application to Afo Field, Niger Delta, Nigeria, Journal of Emerging Trends in Engineering and Applied Sciences. 4(3) (2013).

[34] R.W. Wiener, J.A. Helwig, J. Rongpei, Seismic Interpretation and Structural Analysis of the Rifted Thrust Belt, Jianghan Basin, China, The Leading Edge. 60(8) (1997) 1177-1183.

DOI: 10.1190/1.1437762

[35] P. Van Rensbergen, C.K. Morley, 3-D Seismic study of a shale expulsion syncline at the base of the Champion delta, offshore Brunei and its implications for the early structural evolution of large delta systems; Marine and Petroleum Geology. 17 (2000).

DOI: 10.1016/s0264-8172(00)00026-x

[36] M. Mariela, A Geological Interpretation of 3D Seismic Data of a Salt Structure and Subsalt Horizons in the Mississippi Canyon Subdivision of the Gulf of Mexico, University of New Orleans Theses and Dissertations, (2006).

[37] S. Xia et al., Application of 3D fine seismic interpretation technique in Dawangzhuang Area, Bohai Bay Basin, Northeast China, Arabian Journal of Geosciences. 8(1) (2015) 87-97, DOI 10. 1007/s12517-013-1225-6.

DOI: 10.1007/s12517-013-1225-6

[38] M.R. Malleswar, K.J. Marfurt, Seismic texture analysis for reservoir prediction and characterization, The Leading Edge. 29(9) (2010) 1116-1121.

[39] L. Castanie, F. Bosquet, B. Levy, Advances in seismic interpretation using new volume visualization techniques, First Break, EAGE. 23 (2005) 69-72.

[40] H.M. Khan, A.S.M. Woobaidullah, C. Quamruzzaman, Seismic Interpretation of 2D Data over Kailashtila Gas Field, NE Bangladesh, International Journal of Emerging Technology and Advanced Engineering. 3(11) (2013) 23-34.

[41] H. Doust, The Niger Delta hydrocarbon potential, a major Tertiary Niger Province; Proceedings of KNGMG Symposium, Coastal Lowstands, Geology and Geotechnology, The Hague, Kluiver Acad. Publ., Dordrecht. (1989) 22-25.

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