Characterization of Gas Hydrates Reservoirs in Krishna- Godavari Basin, Eastern Indian Margin
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CSIR-National Geophysical Research Institute, Hyderabad - 500 007
Rowtu Ramu -
CSIR-National Geophysical Research Institute, Hyderabad - 500 007
Kalachand Sain
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Seismic inversion and attribute analysis techniques are frequently used in oil and gas industries to characterize a hydrocarbon reservoir. The gas hydrate reservoir in the Krishna- Godavari basin, eastern Indian margin, by analysis of highresolution multi-channel seismic (MCS) data has been characterised. The model-based seismic inversion was performed to derive acoustic impedance (3220 m/s*g/cm3) followed by computation of seismic attributes for delineating the bottom simulating reflector or BSR, main marker for gas hydrates, and characterizing the hydrate-bearing sediments. The study shows the characteristics of BSR at a depth of ~125 m below sea floor (mbsf), and hence the presence of gas hydrates. The high velocity, low amplitude, high instantaneous frequency and low sweetness indicate presence of gas hydrates above the BSR, whereas low velocity, high reflection strength, low frequencies and high sweetness imply free gas underlying the BSR.Downloads
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Anju K. Joshi, Sain, K. and Laxmi, P. (2018) Gas hydrate saturation and reservoir characterization at sites NGHP-02-17-C and NGHP-02-19-C, Krishna-Godavari basin, eastern margin of India. Jour. Mar. & Petrol.Geol., DOI:10.1016/j.marpetgeo.2018.06.023.
Anstey, N. (1972) Seiscom ‘ 72 (Seiscom Limited Internal Report).
Bastia, R. (2007) Geologic Settings and Petroleum Systems of India's East Coast Offshore Basins: Concepts and Applications. Eastern Book Corporation, 204p.
Boswell, R. and Collett, T.S. (2011) Current perspectives on gas hydrate resources. Energy & Environ. Sci., v.4(4), pp.1206-1215.
Chatterjee.R., Singha, D.K., Ojha, M., Sen, M.K. and Sain, K., (2016) Porosity estimation from pre-stack seismic data in gas-hydrate bearing sediments, Krishna-Godavari basin, India. Jour. Natural Gas Sci. Engg., v.33, pp.562572.
Chopra, S. and Marfurt, K.J. (2007) Seismic attributes for prospect identification and reservoir characterization. Society of Exploration Geophysicists, Tulsa, OC, 456p.
Collett, T. S., Riedel, M. H., Cochran, J. R., Boswell, R., Presley, J., Kumar, P., Sibal, V., (2008) NGHP expedition 01 Scientists, 2008a. National Gas Hydrate Program Expedition 01 initial Reports. New Delhi: Directorate General of Hydrocarbons.
Collett, T.S., Boswell, R., Cochran, J.R., Kumar, P., Lall, M., Mazumdar, A., Ramana, M.V., Ramprasad, T., Riedel, M., Sain, K., Sathe, A.V., Vishwanath, K. & the NGHP Expedition 01 Scientific Party (2014) Geologic implications of gas hydrates in the Indian offshore: Results of the National Gas Hydrate Program Expedition 01. Jour. Mar. & Petrol.Geol., v.58, pp.3-28.
Cook, A. and Goldberg, D. (2008) Stress and Gas Hydrate Filled Fracture Distribution, Krishna-Godavari Basin, India. Proceedings of the 6th International conference on Gas Hydrates (ICGH 2008) (Vancover,British Columbia, Canada, July 6-10.
Cooke, D.A. and Schneider, W.A. (1983) Generalized linear inversion of reflection seismic data. Society of Exploration Geophysicists, v.48(6), pp.665-676.
Curray, J.R., Emmel, F.J., Moore, D.G. and Raitt, R.W. (1982) Structure, tectonics and geological history of the northeastern Indian Ocean. In: Nairn, A.E. and Stehli, F.G. (Eds.), The Ocean basins and margins. New York: Plenum Press, no.6, pp.399-450.
Dillon, W.P., Lee, M.W., Felhaber, K. and Coleman, D.F. (1993) Gas hydrates on the Atlantic continental margin of the United StatesControls on concentration. In: D.G. Howell (Ed.), The Future of Energy Gases, USGS Prof. Paper 1570, pp.313-330.
Finley, P. and Karson, J. (1986) Geological evolution and analysis of confirmed or suspected gas hydrate localities: basin analysis, formation, and stability of gas hydrates in the middle America Trench. US Department of Energy. US Dep. Energy, pp.21181-1950.
Gupta, S.K. (2006) Basin architecture and petroleum system of Krishna Godavari, east coast of India. Leading Edge, v.25, p.830.
He, L., Matsubayashi, O. and Lei, X. (2006) Methane hydrate accumulation model for the Central Nankai accretionary prism. Marine Geology, v.227(3), pp.201-214.
Jyothi, V., Sain, K., Pandey, V. and Bhaumik, A.K. (2017) Seismic attenuation for characterization of gas hydrate reservoir in KG basin, eastern Indian margin. Jour. Geol. Soc. India, v.90, pp.261-266.
Kumar, P., Collett, T.S., Boswell, R., Cochran, J.R., Lall, M., Mazumdar, A., Ramana, M.V., Ramprasad, T., Riedel, M., Sain, K., Sathe, A.V., Vishwanath, K., Yadav, U.S., and the NGHP Expedition 01 Scientific Party (2014) Geologic implications of gas hydrates in the Indian offshore:Krishna-Godavari Basin, Mahanadi Basin, Andaman Sea, Kerala-Konkan Basin. Jour. Mar. Petrol. Geol., v.58, pp.29-98.
Kvenvolden, K.A. (1993) Gas Hydrates-Geological Prospective and Global Change. Reviews of Geophysics, v.31(2), pp.173-187.
Kvenvolden, K.A. (1998) A primer on the geological occurrence of gas hydrate.In: Henriet, J.P. and Mienert, J. (Eds.), Gas hydrates: Relevance to the World Margin Stability and Climate Change. Geol. Soc. London, Spec.Publ., no.137, pp.9-30.
Makogon, Y. F., Holditch, S.A. and Makogon, T.Y. (2007) Natural gashydrates” A potential energy source for the 21st Century. Jour. Petrol.Sci. Engg., v.56(1), pp.14-31.
Max, M. D. (Ed.). (2003) Natural gas hydrate in oceanic and permafrost environments (Vol. 5). Springer Science & Business Media.
Ojha, M. and Sain, K. (2009) Seismic attributes for identifying gas hydrates and free-gas zones: application to the Makran accretionary prism.Episodes, v.32, pp.264-270.
Paull, C.K. and Dillon, W.P. (2001) Natural gas hydrates: occurrence, distribution, and detection. Washington DC American Geophysical Union Geophysical Monograph Series, 124.
Prabhakar, K.N. and Zutshi, P.L. (1993) Evolution of southern part of Indian east coast basins. Jour. Geol. Soc. India, v.41, pp.215-230.
Ramana, M.V., Nair, R.R., Sarma, K., Ramprasad, T., Krishna, K. S., Subrahmanyam, V., . . . Sekhar, D., (1994) Mesozoic Anomalies in the Bay of Bengal. Earth Planet Sci. Lett., v.121, pp.469-475.
Rao, G.N. and Mani, K.S. (1993) A study on generation of abnormal formation pressures in Krishna Godavari Basin, India. Indian Jour. Petrol. Geol., v.2, pp.20-30.
Sain, K., Minshull, T.A., Sigh, S.C., Hobbs, R.W. (2000) Evidence for a thick free-gas layer beneath the bottom-simulating reflector in the Makran accretionary prism. Marine Geol., v.164, pp.3-12.
Sain, K. and Gupta, H.K. (2008) Gas hydrates:Indian scenario, Jour. Geol.Soc. India, v.72, pp.299-311.
Sain, K., Rajesh, V., Satyavani, N., Subbarao, K.V. and Subrahmanyam, C.
(2011) Gas-hydrate stability thickness map along the Indian continental margin. Marine Petrol Geol., v.28(10), pp.1779–1786.
Sain, K. and Gupta, H. (2012) Gas hydrates in India: Potential and development.Gondwana Res., v.22(2), pp.645-657.
Sain, K. (2017) Gas hydrates: A possible future energy resource. Jour. Geol.Soc. India, v.89, pp.359-362.
Sain, K., Maheswar, O., Satyavani, N., Ramadas, G. A., Ramprasad, T., Das, S.K. and Harsh, K.G., (2012) Gas-hydrates in Krishna-Godavari and Mahanadi Basins: New Data. Jour. Geol. Soc. India, v.79, pp.553556.
Sain, K, & Singh, A. K. (2011) Seismic quality factors across a bottom simulating reflector in the Makran accretionary prism. Jour. Mar & Petrol Geol, v.28, pp.1838-1843
Sastri, V.V., Sinha, R.N., Singh, G. and Murti, K. (1973) Stratigraphy and tectonics of sedimentary basins on East Coast of Peninsular India. AAPG Bull., no.57, pp.655-678.
Satyavani, N., Sain, K. and Damodara, N. (2017) Seismic vis-a-vis sonic attenuation in gas hydrate bearing sediments of Krishna-Godavari basin, Eastern Margin of India. Geophys. Jour. Internat., v.209(2), pp.1195– 1203.
Sen, M.K. (2006) Seismic Inversion An interdisciplinary approach to topics in petroleum engineering and geosciences. Soc. Petrol. Engineers, p.74.
Singha, D.K., Chatterjee.R., Sen, M.K. and Sain, K. (2014) Pore Pressure Prediction in Gas-Hydrate bearing Sediments of Krishna-Godavari Basin, India. Marine Geol., v.357, pp.1-11.
Singha, D.K. and Chatterjee, R. (2014) Detection of Overpressure zones and a Statistical Model for Pore Pressure Estimation from Well Logs in the Krishna-Godavari Basin, India. Geochemistry, Geophysics, Geosystems, v.15(4), pp.1009-1020.
Singha, D.K. and Chatterjee.R. (2015) Geomechanical Modeling using Finite Element Method for Prediction of In-situ Stress in KrishnaGodavari basin, India. Internat. Jour. Rock Mechanics and Mining Sci., v.73, pp.15-27.
Sloan, E. D. (1998) Clathrate Hydrates of Natural Gases. 2nd ed., Marcel Dekker, Inc., New York, 705p.
