India's Hydrocarbon Outlook – 2022-2023

44 DGH: 3 DECADES OF UNLOCKING INDIA'S HYDROCARBON POTENTIAL The play-level undiscovered (risked) hydrocarbon inplace for Bikaner-Nagaur area is tabulated below: 4 MMTOE 57 MMTOE Paleozoic Infra-Cambrian (Upper Carbonate) Paleozoic Infra-Cambrian (Jodhpur) Paleozoic Infra-Cambrian (Bilara) 67 MMTOE The play-level undiscovered (risked) hydrocarbon inplace for Jaisalmer area is tabulated below: The sub-basin is spread into the state(s) of Rajasthan. 4 MMTOE 15 MMTOE 81 MMTOE 57 MMTOE 12 MMTOE 29 MMTOE 10 MMTOE 4 MMTOE Cenozoic Eocene (Bandah): Cenozoic Eocene (Khuiala): Cenozoic Paleocene (Sanu): Mesozoic Cretaceous (Middle Goru): Mesozoic Creatceous (Early Cretaceous): Mesozoic Jurassic (Late Baisakhi Badesar): Mesozoic Jurassic (Early Lathi): Mesozoic Jurassic (Middle Jaisalmer): Paleozoic Permo-Triassic (Bhuana): 1 MMTOE The play-level undiscovered (risked) hydrocarbon inplace for Barmer area is tabulated below: The sub-basin is spread into the state(s) of Rajasthan. 264 MMTOE 302 MMTOE 54 MMTOE 67 MMTOE 44 MMTOE 42 MMTOE Cenozoic Eocene (Thumbli): Cenozoic Eocene (Dharvi-Dungar): Cenozoic Paleocene (Barmer Hill): Cenozoic Paleocene (Fatehgarh): Mesozoic Createcous (Late Raageshwari Volcanics): Mesozoic Cretaceous (Ghaggar Hakra): Archean Basement 56 MMTOE Prospectivity The Rajasthan basin has a total hydrocarbon inplace of 2,176 MMTOE, out of which 938 MMTOE has been discovered and it includes both commercial and sub-commercial inplace. The remaining, 1,238 MMTOE, nearly 57% of total inplace is potential to be explored and discovered. The basin has been assessed earlier during 1995-96 study along with 14 other basins. During 2017 Hydrocarbon Resource Assessment Study, 3D PSM approach has been used due to availability of adequate datasets. The 2017 resource reassessment study has incorporated 13,650 LKM of 2D seismic data, 31,041 SKM of 3D seismic data, 390 drilled well information. Data have fair-to-good coverage. Gravity, geochemical data and reports are good while magnetic, 2D/3D seismic, well data are fair. Reliability of results is excellent. 3D PSM and Trap Density method have been used to assess hydrocarbon resources due to adequate data. Velocity modelling is challenging due to well data scarcity scarcity in areas of Bikaner-Nagaur sub-basin. Permo-Triassic & Jurassic plays in Jaisalmer andCretaceous (Ghaggar-Hakra) plays in Barmer can be areas of focus. High quality API of close grid seismic is recommended.