India's Hydrocarbon Outlook – 2022-2023

74 DGH: 3 DECADES OF UNLOCKING INDIA'S HYDROCARBON POTENTIAL Satpura-South Rewa-Damodar is a Category III basin, implying that the basin has entirely undiscovered conventional inplace, that is to be intensely explored and discovered. The basin has an area of 57,180 sq. km. which is entirely onland. In the basin, Satpura has Early Permian- to-Cretaceous play, South Rewa Early Permian- to-Cretaceous and Damodar Early Permian-to- Triassic. The Gondwana rocks of Satpura-South Rewa- Damodar Basin are exposed along a linear belt in Indian peninsular region. The basin has limited geoscientific data, specific to exploration of conventional hydrocarbons. The elements of conventional petroleum system in the basin are hence speculative. Satpura sub-basin, the westernmost among the three sub-basins, is located south of Son-Narmada lineament. Peninsular gneisses of Betul-Chindwara plateau marks its southern limit. The eastern and western parts are covered by Deccan Trap basalts. The rectangular South Rewa sub-basin is bounded by the Malwa Ridge and the Manendragarh-Pratappur ridge to its north and south respectively. The Gondwana rocks of Damodar Basin occur in several isolated east-west trending depressions over the Chotanagpur Platea. The basin has instances of Gondwana sediments - both Lower Permian plays and the Upper Mesozoic. The study envisages the hypothetical Gondwana Prospectivity The Satpura-South Rewa-Damodar basin has a total conventional hydrocarbon inplace of 61 MMTOE, which is entirely undiscovered and potential for intense exploration. The basin has been assessed for conventional hydrocarbons the first time. During 2017 Hydrocarbon Resource Assessment Study, In all subbasins of Satpura, South Rewa and Damodar, Aerial Yield method has been used on analogy of Cooper Basin (Australia). The Satpura subbasin has 2D refraction seismic data (73 LKM), geological map (7,276 SKM), GM data (8,451 stations). The South Rewa subbasin has geological map (10,475 SKM), GM data (3,445 stations) and geochemical data of a few surface samples. In Damodar sub-basin, geological map, GMdata (Durgapurdepression) andgeochemical data (source rock) are incorporated. In this sub- basin, 41 wells that are drilled for CBM and 4 wells for shale gas have been used for the study. 17. SATPURA-SOUTH REWA-DAMODAR BASIN DGH Internal DGH Archive petroleum system, which, based on geological rationale is considered to be a close analogue with the Cooper Basin of Australia. There are three plays identified. viz. Early Permian, Mid. to Late Permian and Triassic to Cretaceous across all three sub-basins viz. Satpura, South Rewa and Damodar.