India's Hydrocarbon Outlook – 2022-2023

39 DGH: 3 DECADES OF UNLOCKING INDIA'S HYDROCARBON POTENTIAL inplace. The remaining, 2,377 MMTOE, nearly 33% of total in-place 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 48,000 LKM of 2D seismic data, 30,000 SKM of 3D seismic data, 900 drilled well information. Data availability is good. The play-level undiscovered (risked) hydrocarbon inplace for Mumbai Offshore basin is given below: <1 MMTOE 26 MMTOE 120 MMTOE 685 MMTOE 148 MMTOE 262 MMTOE 965 MMTOE 164 MMTOE <1 MMTOE Cenozoic Pleistocene- Recent (Biogenic): Cenozoic Pliocece (Biogenic): Cenozoic Miocene (Biogenic): Cenozoic Miocene (Middle): Cenozoic Miocene (Early): Cenozoic Oligocene (Late): Cenozoic Oligocene (Early): Cenozoic Eocene Cenozoic Paleocene-Eocene (Early): Mesozoic (Late Cretaceous and Basal Clastics) 6 MMTOE Geochemical, 2D/3D seismic, well data and reports are excellent while gravity data are good and magnetic data are fair. Reliability of results is good. 3D PSM and Trap Density method have been used to assess hydrocarbon resources since a robust static 3D model can be constructed for adequate input data. Deepwater areas have sparse seismic data and a very few wells were drilled. Paleocene and Eocene plays can be future exploration targets. Deeper sequences and plays are recommended to be future target of exploration, particularly in Tapti-Daman area. Status, available datasets and opportunities In terms of awarded acreage that are now active in Mumbai Offshore basin, 33,402 sq km are under Nomination, 3,645 sq km lie under NELP, 19,123 sq km are under HELP and 6,959 sq km lie under DSF. As of March 1, 2023, NDR, for Mumbai Offshore basin has archived 772,604 LKM of 2D seismic data, 152,630 SKM of 3D seismic data, 3,948 drilled well information. Under OALP Bid Round VIII, one shallow water block of 4,108 sq km area has been offered. In the upcoming Offshore Mega OALP Round IX, there is an opportunity of 27,573 sq km prospective areas that are carved into two blocks, both located in shallow-water. One block is targeted for deeper exploration into Mesozoic plays. MAHARASHTRA GUJARAT DADAR & NAGAR HAVELI DAMAN & DIU 0 50 100 150 200 25 KM MUMBAI BASIN LEGEND PRODUCING FIELD NELP BLOCK NOMINATION PML DSF BLOCK HELP BLOCK 2D SEISMIC 3D SEISMIC WELLS SEDIMENTARY BASIN SHALLOW WATER BASIN DEEPWATER BASIN DGH Internal