India's Hydrocarbon Outlook – 2022-2023

49 DGH: 3 DECADES OF UNLOCKING INDIA'S HYDROCARBON POTENTIAL Hydrocarbon Resource Assessment Study, 3D PSM and Aerial Yield have been used based on the merit of adequate datasets. The 2017 resource reassessment study has incorporated 15,000 LKM of 2D seismic data, 1,400 SKM of 3D seismic data, 317 drilled well information. Gravity, well data and reports are good while magnetic, geochemical and 2D/3D data are fair. Data availability is better in Tripura- Cachhar while it is poor in rest of the basin. Reliability of results is good. 3D PSM and Trap Density method have been used to assess hydrocarbon resources due to fair data in some parts and conceptual information in rest of the basin. There is inadequate coverage of data in major part of the basin. The fact that structural traps primarily formed since Miocene, sequential restoration and migration of thrusts can be focus area. Detailed structural restoration and analysis, close grid seismic API and regional velocity modelling are recommended. The play-level undiscovered (risked) hydrocarbon inplace for Assam-Arakan Fold Belt (AAFB) basin is given below: The basin is spread into the state(s) of Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, Tripura. 187 MMTOE 292 MMTOE 117 MMTOE 78 MMTOE 11 MMTOE 124 MMTOE Cenozoic Pliocene (Tipam): Cenozoic Miocene (Bokabil): Cenozoic Miocene (Upper Bhuban): Cenozoic Miocene (Middle Bhuban): Cenozoic Miocene (Lower Bhuban): Cenozoic Oligocene (Renji): Cenozoic Eocene (Disang): 191 MMTOE Status, available datasets and opportunities In terms of awarded acreage that are now active in Assam-Arakan Fold Belt (AAFB) basin, 5,864 sq km are under Nomination, 87 sq km are in producing fields under Pre-NELP/NELP, 10,321 sq km lie under NELP, 6,569 sq km are under HELP and 638 sqkm lie under DSF. Under National Seismic Programme conducted during 2016-22 in unappraised onland areas, 2,829 LKM broad-band 2D seismic data were acquired in the basin. Actual quantum of 2D seismic survey may be slightly different as acquisition was conducted in sectors that have transgressed beyond the basin boundary and thus accounted within Assam Shelf basin. As of March 1, 2023, NDR, for Assam-Arakan Fold Belt (AAFB) basin has archived 25,826 LKM of 2D seismic data, 16,310 SKM of 3D seismic data, 452 drilled well information. ASSAM MANIPUR MIZORAM MEGHALAYA NAGALAND TRIPURA ARUNACHAL PRADESH 0 50 100 150 200 25 KM ASSAM-ARAKAN FOLD BELT BASIN LEGEND PRODUCING FIELD NELP BLOCK NOMINATION PML DSF BLOCK HELP BLOCK 2D SEISMIC 3D SEISMIC WELLS ASSAM-ARAKAN FOLD BELT BASIN SEDIMENTARY BASIN DGH Internal