India’s Hydrocarbon Outlook 2024 96 A Report on Exploration & Production Activities 16. BHIMA-KALADGI BASIN Bhima-Kaladgi is a Category III basin, implying that the basin has entirely undiscovered inplace, that calls for intense exploration for a potential discovery. Bhima sub-basin partially overlaps with the state(s) of Karnataka and Telangana. Kaladgi sub-basin partially overlaps with the state(s) of Karnataka and Maharashtra. Source: DGH Internal Source: DGH Internal Bhima-Kaladgi are two Proterozoic sub-basins situated over Dharwar craton. The elements of petroleum system in the basin are largely speculative. Bhima sub-basin is characterized by NeoProterozoic sedimentary sequence of 250 m thickness whereas Kaladgi sub-basin is represented by 4,500 m thick Paleo-to-NeoProterozoic sediments. Entire Proterozoic sequences in Bhima-Kaladgi Basin has been considered as single play, sub-divided into three assessment units each on the basis of their respective tectonic set-up. The basin has the close analogy with Vindhyan Basin. Paleo-to-Meso-Proterozoic BasuhariRohtas play of Vindhyan Basin has been used in the analogue study. Sub-basalt imaging to study sub-trappean sediments is the focus area. Source rocks are thick successions of shale (argillite)–limestone (dolomite)/stromatolitic limestone rich in organic matter. The Deccan Traps overlying the successions of these basins might have provided sufficient thermal conditions for hydrocarbon generation in the arenaceous and carbonate rocks of Baghalkot Group.
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