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Major Contributions

  • Established state-of-the-art Gas Hydrate Research Center at CSIR-NGRI with world-class facilities for traveltime tomography, amplitude vs. offset modeling, full-waveform tomography, impedance inversion, pre-stack depth migration, attenuation & other attribute studies, rock physics modeling, and interpretation of seismic data. 

  • Led scientific cruises in 2007, 2010 and 2017 by designing specific experiments for the heat flow experiments off Goa and Cochin, investigation for marine gas-hydrates in Krishna-Godavari (KG) and Mahanadi basins, and imaging plate geometries in the Andaman subduction zone

  • Delineated gas-hydrates (future major unconventional energy resources) in KG, Mahanadi and Andaman basins from where samples were later recovered by drilling and coring for validation

  • Prepared gas-hydrates stability thickness map, and characterized gas-hydrates reservoirs through computation of seismic attributes (reflection strength, instantaneous frequencies, attenuation etc.); and evaluated the resource potential of gas-hydrates within Indian exclusive economic zone

  • Developed a new approach by combining several attributes into a meta-attribute based on artificial neural network for better delineation of subsurface features like gas-chimneys, faults, slump deposits, channel systems, volcanic intrusion etc. from 3D seismic data off New Zealand

  • Volcanic rocks make routine geophysical methods incapable of probing underlying Mesozoic sediments (where more than 50% oil is found globally) that have been imaged onland in Kutch, Saurashtra, Deccan Syneclise & central India. The results match with available lithologs

  • Developed state-of-the-art full waveform tomography and successfully applied to ONGC's wide-angle ocean bottom seismic data, for the first time, to delineate fine-scale 2D velocity structure of Mesozoic sediments below the volcanic rocks in Kerala-Konkan offshore

  • Delineated deep features in various geological provinces (Southern Granulite Terrain, Dharwar Craton, Eastern Ghats-Cuddapah basin, Narmada-Son Lineament, Kutch Peninsula, Marwar Basin, Bengal Sedimentary Basin, Mahanadi Delta, NW Himalaya), and shed light for tectonic implications; and understanding processes for Bhuj (2001) and Jabalpur (1997) earthquakes

  • Delineated fine-scale velocity structure by sophisticated full-waveform inversion of MCS data in Mahanadi and KG basins, which show features like faults to understand the gas-hydrates system

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