India's Hydrocarbon Outlook – 2022-2023

41 DGH: 3 DECADES OF UNLOCKING INDIA'S HYDROCARBON POTENTIAL and magnetic data are fair. Reliability of results is excellent. 3D PSM and Trap Density method have been used to assess hydrocarbon resources due to good quality data existing throughout the basin. Biggest challenge is that mature source rocks lie below the thrust belt. Naga thrust belt can be future focus for exploration. Shallow play near Naga-Schuppen belt is recommended target for exploration. The play-level undiscovered (risked) hydrocarbon inplace for Assam Shelf basin is given below: The basin is spread into the state(s) of Arunachal Pradesh, Assam, Meghalaya, Nagaland. 192 MMTOE 242 MMTOE 46 MMTOE 67 MMTOE 102 MMTOE 9 MMTOE 1 MMTOE Cenozoic Pliocene (Girujan): Cenozoic Miocene (Tipam): Cenozoic Oligocene (Barail Coal Shale): Cenozoic Oligocene (Barail Main Sands) Cenozoic Eocene (Kopili): Cenozoic Eocene (Sylhet): Cenozoic Early Paleocene (Tura): Archean Basement: 215 MMTOE Status, available datasets and opportunities NELP, 18,825 sq km are under HELP, 206 sq km lie under DSF. Under National Seismic Programme, conducted during 2016-22 in unappraised onland areas, 2,416 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-Arakan Fold-belt basin. As of March 1, 2023, NDR, for Assam Shelf basin has archived 27,644 LKM of 2D seismic data, 36,522 SKM of 3D seismic data, 3,205 drilled well information. Under OALP Bid Round VIII, one block of 2,058 sq km area has been offered. Under OALP IX Mega Round, 2 blocks of cumulative area of 2,952 sq km has been put on offer. ASSAM ARUNACHAL PRADESH MANIPUR MEGHALAYA NAGALAND MIZORAM TRIPURA WEST BENGAL 0 40 80 120 160 20 KM ASSAM SHELF BASIN SATPURA LEGEND PRODUCING FIELD NELP BLOCK NOMINATION BLOCK DSF BLOCK HELP BLOCK 2D SEISMIC 3D SEISMIC WELLS ASSAM SHELF BASIN SEDIMENTARY BASIN DGH Internal In terms of awarded acreage that are now active in Assam Shelf basin, 5,652 sq km are under Nomination, 56 sq km are in producing fields under Pre-NELP/NELP, 567 sq km lie under