India’s Hydrocarbon Outlook 2024 92 A Report on Exploration & Production Activities 14.CUDDAPAH BASIN Cuddapah is a Category III basin, implying that the basin has entirely undiscovered inplace, that calls for intense exploration for a potential discovery. The geographical area of the basin partially overlaps with the state(s) of Andhra Pradesh and Telangana. Source: DGH Internal Source: DGH Internal Cuddapah is a crescent-shaped basin, located in the eastern part of Dharwar craton. The elements of petroleum system in the basin are speculative. The basin with Paleo- to-Neoproterozoic age has stratigraphic thickness ranging 6 to 12 km. The basin has the close analogy with Vindhyan Basin. The Paleo-to-Meso-Proterozoic BasuhariRohtas 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. A speculative Proterozoic petroleum System has been envisaged in view of absence of subsurface data based on the closest analogy of the Paleo-to-Meso-Proterozoic Basuhari-Rohtas play of Vindhyan Basin. Sandstones having Secondary porosity (fractures) are reservoirs. The intervening shale within the sedimentary sequence may act as an effective seal. Cumbum Shales, Tadpatri Shales & Vempalle Stromatolitic Dolomite are source. Entrapment is structural like anticlines and fault closures.
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