Hydrocarbon Evaluation and New Well Prognosis Based on Seismic and Petrophysical Analysis of Ghauspur Area, Central Indus Basin, Pakistan
Abstract
Reservoirs are characterized by significant heterogeneity at numerous scales ranging from exploration to production and enhanced production scale. The variations of primary depositional facies could be identified using seismic and well log data as it controls the architecture of a reservoir. Seismic data helps in accurate reservoir characterization. The present research is based upon 2D seismic interpretation, attribute and petrophysical analysis of Ghauspur area, Central Indus Basin, Pakistan. Interpretation of seismic lines shows negative flower structure bounded by two normal faults dipping in the northwest (NW) to southeast (SE) direction. Attribute analysis improved geologic visualization and shows the presence of hydrocarbons at well Indus-1B because of low frequency and low amplitude values. Petrophysical characterization of Sui Main Limestone (SML) penetrated in Indus-1B and Badar South-01 wells was evaluated which proved it to be water-wet with no economic potential for hydrocarbons. On the basis of seismic data interpretation, attribute and petrophysical analyses, a new well location is proposed on the crustal part of the structure.
References
A. Farah, S.G. Abbas, K.A. DeJong and R.D. Lawrence, “Evolution of lithosphere in Pakistan”, Tectonophysics, vol. 105, pp. 207-227, 1984.
N. Ezekwe, “Petroleum reservoir engineering practice: Porosity of reservoir rocks”, Boston, Pearson Education, Inc., 2010.
M. H. Rider, “The geological interpretation of well logs, New York: John Wiley and Sons, 1996.
I. B. Kadri, “Petroleum geology of Pakistan”, Pakistan Petroleum Limited, pp.275, 1995.
L.A. Leverson, “Geology of petroleum”, 2nd Ed., San Francisco, Freeman, W.H. and Company pub., pp. 724, 1972.
C.L. Liner, “Interpreting Seismic Data”, Treatise of Petroleum Geology / Handbook of Petroleum Geology: Exploring for Oil and Gas Traps, Special volume, The American Association of Petroleum Geologists, 1999.
H.A. Raza, S.M. Ali and R. Ahmed, “Petroleum geology of Kirthar sub-basin and part of Kutch Basin”, Pakistan Journal of Hydrocarbon Research, vol. 2, pp. 29-73, 1989.
S.M.I. Shah, “Stratigraphy of Pakistan”, Geological Survey of Pakistan Memoirs, vol. 22, pp. 1-138, 2009.
M.E. Badley, “Practical Seismic Interpretation”, Dordrecht, Holland: D. Riedel Publishing Company and International Human Resources Development Cooperation, pp. 256-260, 1985.
M.B. Dobrin and C.H. Savit, “Introduction to Geophysical Prospecting”, New York: McGraw-Hill, pp. 867, 1988.
N.K. Siddiqui, “Sui Main Limestone: Regional geology and the analysis of original pressures of a closed-system reservoir in central Pakistan”, Bulletin of American Association of Petroleum Geologists, vol. 88, no. 7, pp. 1007-1035, 2004.
H.R. Tainsh, K.V. Stringer and J. Azad, “Major Gas Fields of West Pakistan”, Bulletin of the American Association of Petroleum Geologists, vol. 43, no. 1, pp. 2675-2700, 1959.
B.E. Wandrey, Law, S.A. Haider, “Sembar Goru/Ghazij composite total petroleum system, Indus and Sulaiman-Kirthar geologic provinces, Pakistan and India”, U.S. Geological Survey Bulletin 2208-C, vol. 56, pp. 220-275, 2004.
A. Zia, M. Awais, M. Ishaq, S. Hamid, N. Akhtar and L. Sheikh, “Application of well log Analysis to assess the petrophysical parameters of the early eocene Sui Main Limestone (SML) in Kharnhak-1 well, Middle Indus Basin, Pakistan”,. Iranian J. Oil & Gas Sci. & Tech., vol. 5, no. 2, pp. 1-20, 2016.Èh@
