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Hydrocarbon Reservoir Evaluation: a case study of Tymot field at southwestern offshore Niger Delta Oil Province, Nigeria

Victor Cypren Nwaezeapu, Izediunor U. Tom, Ede T. A. David, Oguadinma O. Vivian

Abstract

Abstract: Aim: This study presents the log analysis results of a log suite comprising gamma ray (GR), resistivity (LLD), neutron (PHIN), density (RHOB) logs and a 3D seismic interpretation of Tymot field located in the southwestern offshore of Niger delta. This study focuses essentially on reserves estimation of hydrocarbon bearing sands. Well data were used in the identification of reservoirs and determination of petrophysical parameters and hydrocarbon presence. Three horizons that corresponded to selected well tops were mapped after well-to-seismic tie. Structural depth maps were created from the mapped horizons. The structural style is dominated by widely spaced simple rollover anticline bounded by growth faults, and this includes down-to-basin faults, antithetic faults and synthetic faults. The petrophysical values – the porosity, net-to-gross, water saturation, hydrocarbon saturation that were calculated yielding  an average porosity value  of 0.23, water saturation of 0.32 and an average net-to-gross value of 0.62. Three horizons H1, H2 and H3 were mapped. The three horizons marked the tops of reservoir sands and provide the structures for hydrocarbon accumulation. Hydrocarbon in-place was estimated. The total hydrocarbon proven reserves for the mapped horizons H1, H2, and H3 were estimated to be 39.04MMBO of oil and 166.13BCF for sand E. 


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References

Cosentino L, Integrated reservoir studies. Technip 2001

Omoboriowo AO, Chiaghanam OI, Chiadikobi KC, et al. Ideozu, Reservoir characterization of konga Field, onshore Niger Delta, Southern Nigeria. Int. J Sci. Emerging Tech 2012; 3: 19-31.

Whiteman AJ, Its Petroleum Geology, Resources and potentials. Graham and Trotman, London 1982; 394.

Obiadi II, Emina R, Obiadi CM, Evaluation and Prospect Identification in the Olive Field, Niger Delta Basin, Nigeria. JPEB 2016; 7: 284.

Short KC, Stauble AJ, Outline of Geology of Niger Delta: AAPG Bulletin 1967; 2: 209-221.

Jarvis K, Integrating well and seismic data for reservoir characterization: Risks and Rewards. AESG 2006; 1: 1-4.

Weber KJ, Sedimentological aspect of oil fields in Niger Delta. Geol. En. Mojnbouw 1971; 50: 559-576.

Hospers J, Gravity field and structure of the Niger Delta, Nigeria, West Africa. GSA Bulletin 1965; 76: 407- 422.

Merki P, Structural Geology of Cenozoic Niger Delta. In: T. F. J. Dessauvagie and A. J. Whiteman (eds): Africa Geology. Ibadan University Press 1972; 635-646.

Ekweozor CM, Daukoru ED, Northern delta depobelt portion of the Akata-Agbada petroleum system, Niger Delta, Nigeria 1994; 599-613.

Michele LW, Ronald RC, Michael EB, The Niger Delta Petroleum System: Niger Delta Province, Nigeria Cameroon, and Equatorial Guinea 1999;

Evamy BD, Haremboure J, Kamerling P, et al. Rowlands, Hydrocarbon habitat of Tertiary Niger Delta: AAPG Bulletin, 1978; 62: 277-298.

Doust H, Omatsola E 1990; Niger Delta: In Edwards JD and Santogrossi PA, eds divergent/passive margin basins: AAPG Bulletin Memoir 1990; 48: 201-328.

Weber KJ, Daukoru EM 1975; Petroleum geology of the Niger Delta, 9th World Petroleum Congress Proceedings, Tokyo 1975; 2: 209-221.


DOI: http://dx.doi.org/10.18063/nn.v0i0.618
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