India's Hydrocarbon Outlook – 2022-2023

81 DGH: 3 DECADES OF UNLOCKING INDIA'S HYDROCARBON POTENTIAL Narmada is a Category III basin and it has an area of 95,215 sq. km. which is entirely onland. In the basin, 1 play is identified within Sub-Trappean Gondwana. The basin is located in the northwestern part of Indian Peninsula and it extends up to the eastern limit of Cambay Basin while eastward it merges with the western boundary of Satpura. The basin has limited geoscientific data and the elements of petroleum system in the basin are largely speculative. The basin is fully covered by Deccan Trap volcanics. However, Pre-Trappean Gondwana sediments are speculated to be present over the basement rocks in the basin. Based on Gravity and DSS data, sedimentary thickness of the basin is envisaged to be in the range of 300 m to 2.0 kms. The basin has Pre-Trappean Gondwana play, which is divided into four assessment units based on available geological rationales. Prospectivity The Narmada basin has a total hydrocarbon inplace of 9 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 Cooper Basin, Australia. The basin has envisaged 400-1,500m sedimentary thickness. Geological map (semi-detailed), DSS data along 3 profiles, GM data (regional), MT data (3 profiles) and geochemical survey for adsorbed gas 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 fair and Geochemical data are poor. No subsurface information is available. Basin is covered by Decan trap. Focus should be made to the sediment below the basalt. Results may be reviewed as and when new sets of data are available. 20. NARMADA BASIN DGH Internal DGH Archive