Current Science

Open Access Open Access  Restricted Access Subscription Access

Gas Leakage from Palaeogene Reservoir in Assam - A Geophysical Puzzle


Affiliations
1 Department of Applied Geology, Dibrugarh University, Dibrugarh 786 004, India
 

Reports of gas leakage started coming since the beginning of 2012 from different localities in the Deohal area near the oil township Duliajan, Assam (India). The source was located in a gas reservoir in the Palaeogene sediments (Barail group). Multi-component seismic reflection methods which were highly successful to locate gas bearing zones at depths, were not very effective to locate the same in the shallow subsurface. From different types of electrical surveys conducted, self-potential (SP) method showed the most promising result. Probable SP was sensitive to high electrokinetic potential difference between the leaking and non-leaking zones.

Keywords

Deohal, Electrokinetic Potential, Gas Leakage, Palaeogene.
User
Notifications
Font Size

  • Singh, K., Chaudhury, A. and Bhattacharyya, N., Seven Decades of Geophysics in Northeast India, Association of Exploration Geophysicists, India, 1996, pp. 1–87.

  • Verma, R. K., Ahluwalia, M. S. and Mukhopadhyay, M., Seismicity, gravity and tectonics of Northeast India and N. Burma. Bull. Seismol. Sot. Am., 1976, 66, 1683–1694.

  • Willett, S. D. and Beaumont, C., Subduction of Asian lithospheric mantle beneath Tibet inferred from models of continental collision. Nature, 1994, 369, 642–645.

  • Banerjee, P. and Bürgmann, R., Convergence across the northwest Himalaya from GPS measurements. Geophys. Res. Lett., 2002, 29, 30–34.

  • Flemings, P. B. and Jordan, T. E., Stratigraphic modelling of foreland basins: interpreting thrust deformation and lithospheric rheology. Geology, 1990, 18, 430–434.

  • Beaumont, C., Fullsack, P. and Hamilton, J., Erosional control of active compressional orogens. In Thrust Tectonics (ed. McClay, K. R.), Chapman & Hall, London, 1992, pp. 1–18.

  • Gurnis, M., Rapid continental subsidence following the initiation and evolution of subduction. Science, 1992, 255, 1556–1558.

  • Mukhopadhyay, B., Acharyya, A., Bhattacharyya, D., Dasgupta, S. and Pande, P., Seismotectonics at the terminal ends of the Himalayan Arc. Geomatics, Natural Hazards Risk, 2011, 2(2), 159–181.

  • Bilham, R. and England, P., Plateau ‘pop-up’ in the great 1897 Assam earthquake. Nature, 2001, 410, 806–809.

  • Ranga Rao, A., Geology and hydrocarbon potential of a part of Assam–Arakan basin and its adjoining region. Pet. Asia J., 1983, 6, 127–158.

  • Coleman, J. M., Brahmaputra River channel processes and sedimentation. Sediment. Geol., 1969, 3, 129–239.

  • Goswami, D. C., Brahmaputra River, Assam, India: Physiography, basin denudation and channel aggradation. Water Resour. Res., 1985, 21, 959–978.

  • Sarma, J. N., Fluvial process and morphology of the Brahmaputra river in Assam, India. Geomorphology, 2005, 70, 226–256.

  • Lahiri, S. K. and Sinha, R., Morphotectonic evolution of the Majuli Island in the Brahmaputra valley of Assam, India inferred from geomorphic and geophysical analysis. Geomorphology, 2014, 227, 101–111.

  • Lahiri, S. K. and Sinha, R., Tectonic controls on the morphodynamics of the Brahmaputra River system in the upper Assam valley, India. Geomorphology, 2012, 169–170, 74–85.

  • Telford, W. M., Geldart, L. P. and Sheriff, R. E., Applies Geophysics, Cambridge University Press, 1990, 2nd edn.


Abstract Views: 179

PDF Views: 76




  • Gas Leakage from Palaeogene Reservoir in Assam - A Geophysical Puzzle

Abstract Views: 179  |  PDF Views: 76

Authors

Siddhartha Kumar Lahiri
Department of Applied Geology, Dibrugarh University, Dibrugarh 786 004, India
Monjit Chutia
Department of Applied Geology, Dibrugarh University, Dibrugarh 786 004, India
Anurag Gogoi
Department of Applied Geology, Dibrugarh University, Dibrugarh 786 004, India
Himanta Borgohain
Department of Applied Geology, Dibrugarh University, Dibrugarh 786 004, India

Abstract


Reports of gas leakage started coming since the beginning of 2012 from different localities in the Deohal area near the oil township Duliajan, Assam (India). The source was located in a gas reservoir in the Palaeogene sediments (Barail group). Multi-component seismic reflection methods which were highly successful to locate gas bearing zones at depths, were not very effective to locate the same in the shallow subsurface. From different types of electrical surveys conducted, self-potential (SP) method showed the most promising result. Probable SP was sensitive to high electrokinetic potential difference between the leaking and non-leaking zones.

Keywords


Deohal, Electrokinetic Potential, Gas Leakage, Palaeogene.

References





DOI: https://doi.org/10.18520/cs%2Fv111%2Fi7%2F1242-1246