India's Hydrocarbon Outlook – 2022-2023

87 DGH: 3 DECADES OF UNLOCKING INDIA'S HYDROCARBON POTENTIAL Cuddapah is a Category III basin , implying that the basin has entirely undiscovered inplace, that is to be intensely explored and discovered. The basin has an area of 40,100 sq. km. which is entirely onland. In the basin, 1 play is known within Pre- Cambrian. The crescent shaped Cuddapah basin is located in the eastern part of Dharwar craton. Geoscientific data available is limited and the elements of petroleum system in the basin are speculative. The Eastern Ghat mobile belt thrusted over Proterozoic rocks marks the eastern limit of the basin while along the western convex margin, the sediments display unconformable relationships with the gneissic and Late Archaean granites of Dharwar craton. The basin with Paleo- to-Neoproterozoic age has stratigraphic thickness ranging 6 to 12 km. The Paleo-to-Meso-Proterozoic Basuhari-Rhotas play of Vindhyan Basin is the close analogue. Entire Proterozoic sequence of the basin is considered a single Proterozoic Play, subdivided into five assessment units based on geological rationales. Prospectivity The Cuddapah basin has a total hydrocarbon inplace of 5 MMTOE, which is entirely undiscovered and potential for intense exploration. The basin has been assessed for the first time. During 2017 Hydrocarbon Resource Assessment Study, Aerial Yield method is used on analogy of Vindhyan Basin. 6,000-10,000m sedimentary thickness is envisaged in the basin. Geological map, DSS along 2 profiles, MT data along part of DSS profile, geochemical survey (analysis of adsorbed gas) on 304 samples are included in the study. Seismic data in form of Deep Seismic Sounding profiles is available. Gravity data is of good quality while Magnetic data and report are 23. CUDDAPAH BASIN DGH Internal DGH Archive