Abstract
The Khewra Sandstone is widely distributed throughout the Potwar Basin of Pakistan. Its reservoir aspects are evaluated by the interpretation of well log data recorded from Kal-01 and Kal-02 wells in the Kal Oil Field, eastern Potwar Basin. The encountered thickness of the Khewra Sandstone in Kal-01and Kal-02 varies from 60 m to 120 m. On the basis of lithological interpretation from wireline logs the formation is divided into four facies: 1) shale interbedded with minor siltstone and sandstone, 2) sandstone with alternating siltstone and claystone/shale, 3) claystone/shale, siltstone interbedded with fine to medium grained sandstone and 4) fine to coarse grained sandstone with channels. The log derived average porosity in Khewra Sandstone is about 14–22% with permeability ranges from 20–58 mD. Thus, it possesses a large storage capacity for moveable hydrocarbons in Kal Oil Field. Facies 4, in the upper part of the Khewra Sandstone, is interpreted as potential reservoir interval with hydrocarbon saturation ranges from 77–79%. Based on isopach map, the formation is interpreted to be well developed in NE-SW which gradually thins basinward to the west and northwest direction. The play fairway analysis suggested very high chances of hydrocarbon entrapment is in the Kal Oil Field.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Ali, A., 2010, Structural Analysis of the Trans-Indus Ranges: Implications for the hydrocarbon potential of the NW Himalayas, Pakistan. PhD Thesis, National Centre of Excellence in Geology, University of Peshawar, Peshawar, 230 p.
Arslan, M., Yaqub, M., and Khan, M.S., 2014, Quantitative Estimation of Abrasion Loss from Strength of Sandstone Rocks of Salt Range, Pakistan. The Nucleus, 51, 439–443.
Asquith, G.B., 1982, Basic Well Log Analysis for Geologists. Tulsa, Oklahoma, USA, 216 p.
Baqri, S.R.H. and Rajpar, A.R., 1991, The clay mineral studies of the Khewra Sandstone exposed at Khewra, eastern Salt Range. Geological Bulletin of Peshawar University, 24, 203–214
Ghazi, S. and Malik, K.P., 2004, Hydrocarbon potential of the Upper Paleocene Lockhart Limestone from Shakardara Well-1, Kohat, Pakistan. Geological Bulletin of the Punjab University, 39, 67–73.
Ghazi, S. and Mountney, N., 2010, Subsurface lithofacies analysis of the fluvial Early Permian Warchha Sandstone, Potwar Basin, Pakistan. Journal of Geological Society of India, 76, 505–517.
Grant, S., Milton, N., and Thompson, M., 1996, Play fairway analysis and risk mapping: an example using the Middle Jurassic Brent Group in the northern North Sea. In: Dore, A.G. and Sinding-Larsen, R. (eds.), Quantification and Prediction of Hydrocarbon Resources. Elsevier, Stavanger, Norwegian Petroleum Society, Special Publications, p. 167–181.
Grelaud, S., Sassi, W., de Lamotte, D.F., Jaswal, T., and Roure, F., 2002, Kinematics of eastern Salt Range and South Potwar Basin (Pakistan): a new scenario. Marine Petroleum Geology, 19, 1127–1139.
Jehangiri, M., Hanif, M., Arif, Jan, I.U., and Ahmad, S., 2014, The Early Cambrian Khewra Sandstone, Salt Range, Pakistan: endorsing southern Indian provenance. Arabian Journal of Geosciences, DOI# 10.1007/s12517-014-1649-7.
Khan, M.A., Ahmad, R., Raza, H.A., and Kemal, A., 1986, Geology of Petroleum in Kohat Potwar Depression. American Association of Petroleum Geologists Bulletin, 70, 396–414.
Khan, M.A., Bhatti, A.A., Gillani, S.T.A., Qadri, M.A., and Raza, A., 2012, Estimation of porosity of Khewra Sandstone of Cambrian age by using Helium Porosimeter and its application in reservoir evaluation. Pakistan Journal of Engineering and Applied Sciences, 11, 30–33.
Khan, M.S., Akram, M., Abu Bakar, M.Z., Aadil, N., 2013, Assessment of durability of Khewra Sandstone of Cambrian Age, Salt Range, Pakistan. Pakistan Journal of Science, 5, 527–530.
Lillie, R.J., Johnson, G.D., Yousaf, M., Zaman, A.S.H., and Yeats, R.S., 1987, Structural development within the Himalayan foreland fold and thrust belt of Pakistan. Canadian Society of Petroleum Geologists Memoir, 12, 379–392.
Najman, Y., 2006. The detrital record of orogenesis: A review of approaches and techniques used in the Himalayan sedimentary basins. Earth Science Reviews, 74, 1–72.
Sajid, Z., 2013, Petrophysical analysis of a clastic reservoir rock: A case study of the Early Cambrian Khewra Sandstone, Potwar Basin, Pakistan. M. Phil. Thesis, Institute of Geology, University of the Punjab, Lahore, 214 p.
Shah, S.M.I., 1977, Stratigraphy of Pakistan. Memoirs of the Geological Survey of Pakistan, 12, 76–77.
Sharif, A., 2007, Tight gas resources in Western Australia. Western Australia Department of Mines and Petroleum, 28–31.
Siddiqui, M.M. and Aamir, M., 2006, Interpretation and visualization of thrust sheets in a triangular zone in eastern Potwar, Pakistan. The Leading Edge, 25, 24–37.
Wandrey, C.J., Law, B.E., and Shah, H.A., 2004, Patala-Nammal Composite Total Petroleum System, Kohat-Potwar Geologic Province, Pakistan. USGS Bulletin 2208-B, US Department of Interior, Denver, 20 p.
Yeats, R.S. and Lawrence, R.D., 1984, Tectonic of the Himalayan Thrust Belt in the Northern Pakistan. In: Haq, B.U. and Milliman, J.D. (eds.), Marine Geology and Oceanography of the Arabian Sea and Coastal Pakistan. Van Nostrand Reinhold/Scientific and Academic Editions, New York, p. 177–198.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Ghazi, S., Khalid, P., Aziz, T. et al. Petrophysical analysis of a clastic reservoir rock: a case study of the Early Cambrian Khewra Sandstone, Potwar Basin, Pakistan. Geosci J 20, 27–40 (2016). https://doi.org/10.1007/s12303-015-0021-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12303-015-0021-6