India's Hydrocarbon Outlook – 2022-2023

72 DGH: 3 DECADES OF UNLOCKING INDIA'S HYDROCARBON POTENTIAL Pranhita-Godavari (PG) is a Category III basin, it has an area of 30,000 sq. km. which is entirely onland. In the basin, 4 plays exist within Lower Permian-to-Lower Triassic. The basin is a NW-SE trending intracratonic rift, located over Peninsular India and bounded by metamorphic rocks of Bastar to its northeast and Dharwar cratons to its southwest. Geoscientific data available in the basin is inadequate with limited 2D seismic along with two drilled well information. The underlying Proterozoic metasediments with poor source and reservoir characteristics are not been considered to be prospective. Potential plays are envisaged in Talchir, Barakar, Lower, Middle and Upper Kamthi Formations. Geologically the basin is divided into four tectonic blocks namely, Aswaraopeta, Sironcha, Chandrapur and Nagpur blocks. Of these, Nagpur block along with a part of sediments and Nagpur completely covered by Deccan Trap basalts. Geological data indicates presence of about 4 to 5 Km of sediments. The oldest sediments known from surface exposures are the Lower Proterozoic overlain by Gondwana sediments. There are two speculative petroleum systems. Based on geological similarity, the Permo- Triassic sediments of Mandapeta area of KG onland basin are the close analogue. Prospectivity The Pranhita-Godavari (PG) basin has a total hydrocarbon inplace of 92 MMTOE, which is entirely undiscovered and potential for intense exploration. 16. PRANHITA-GODAVARI (PG) BASIN DGH Internal DGH Archive of Chandrapur block are covered by Deccan Trap. Aswaraopeta and Sironcha blocks have three play units. Chandrapur has low thickness