In this paper, a sequence stratigraphy and reservoir petrophysical analysis of a single oil well (Well H) has been prepared by using an available core data and wireline logging data with a view to characterizing the reservoir. In addition, petrophysical analysis initiated with lithology identification and lithological panels interpreted from well log data show that the study area is characterized by sand-shale interbedding. Moreover, appropriate logs have been used to interpret the reservoir for their fluid content, as are result; hydrocarbons versus water bearing zones were outlined. Furthermore, the reservoir interval generally presents vertical anisotropy and great heterogeneity with thick sand filled channel layers. The core involves mostly of red bed of sandstone with some structure- less which is deposited in fluvial environment system. However, the core data are relatively collated to wireline data to assess and survey the reservoir rock petrophysical properties. A hydrocarbon water contact (HWC) was obtained from 1655 m. In addition, an average of 78.5 m of gross rock was decomposed with a counted 17.35 m of net pay exhibit average values of 0.2832 for water saturation and 0.1785 for porosity.
Keywords: Formation Evaluation, Net-pay Reservoir, Gross Rock.
- Adeoye, T.O. and Enikanselu, P. (2009): Reservoir Mapping and Volumetric analysis using Seismic and Well Data. Ocean Journal of Applied Sciences, Vol. 2, Issue 4 p. 66 – 67.
- Adeoye, O.T. and M.O. Ofomola. 2013. “Reservoir Characterization of “Meri_T” Field (South Western, Niger Delta) from Well Log Petrophysical Analysis and Sequence Stratigraphy”. Pacific Journal of Science and Technology. 14(1):571-585.
- Aigbedion, J.A. and Iyayi, S.E. (2007): Formation Evaluation of Oshioka Field, using geophysical well logs‟, Middle-east Journal of Scientific Research, 2(3 – 4) p.107 – 110.
- Archie, G.E., 1950. Introduction to Petrophysics of reservoir rocks. Bulletin of AAPG, Tulsa, 34(5): 943-961.
- Bowman, M.B.J., McClure, N.M., and Wilkinson, D.W. (1993) ”Wytch Farm oilfield: deterministic reservoir description of the Triassic Sherwood Sandstone“, Petroleum Geology of Northwest Europe: Proceedings of the 4th Conference (edited by J. R. Parker), Petroleum Geology ’86 Ltd, The Geological Society, London, pp. 1513-1517.
- Dewan, J. 1983. Essentials of Modern Open Hole Log Interpretation. Penwell Publishing: Tulsa, OK. 361.
- Imasuen, O.I. and Samuel, O. (2013) „FORMATION EVALUATION OF WELL X, Y AND Z IN G-FIELD ONSHORE, NIGER DELTA, NIGERIA‟, Emerging Academy Resources, 02(06), pp. 413-417.
- Newell, A.J., (2006) “Formation SW England fluvial sandstone aquifers (Otter Sandstone Calcrete as a source of heterogeneity in Triassic)”, Geological Society, p119-127, v.263, Geological Society, London, Special Publications.
- Ola-Buraimo, A.O, J.E. Ogala, and O.F. Adebayo. (2010) “Well-Log Sequence Stratigraphy and Paleobathymetry of Well-X, Offshore Western Niger Delta, Nigeria”. World Applied Sciences Journal. 10(3):330-336.
- Schlumberger, (1985) „Well evaluation conference, Lagos-Nigeria, 3: 4-7.
- Stat Oil Research Group (2003): Geological Reservoir Characterization. Research and Technology Memoir 4.
- Worthington, P., (2010) Net Pay—What Is It? What Does It Do? How Do We Quantify It? How Do We Use It?. SPE Res. Eng. 12(5): 812-822. SPE-123561-PA. http://dx.doi.org/10.2118/123561-PA