Krishna Basin, Offshore India - Structural Assessment with Modern Seismic

Krishna Basin shallow water block is a pure exploratory play re-evaluated with new 3D seismic broadband technology and ancillary geophysics measurements. Results of the improved mapping, seismic attribute analyses and seismic inversion impacts the planned future drilling programme. There are three main play types planned for drilling, all in bathymetry of less than 100 meters: • Pre-rift, • Syn-rift • Post-rift All of these plays have been analysed in detail with the new seismic along with gravity and magnetic data. Seismic technology involved broadband processing in time and depth and several imaging migration processes to better delineate the sequences in the main target areas of syn-rift and pre-rift. In addition to this structural mapping effort detailed seismic stratigraphy of new plays was studied by physical and geometric seismic attributes. Broadband long offset seismic un-covered plays in the syn-rift and pre-rift, these were not imaged with vintage seismic. This contemporaneous investigation of Krishna Basin is a synergistic project, whereby seismic imageries and geophysics mapping are input to basin modelling and several hydrocarbon migration scenarios, all parameters utilized in the geology de-risking of prospects.