India's Hydrocarbon Outlook – 2022-2023

68 DGH: 3 DECADES OF UNLOCKING INDIA'S HYDROCARBON POTENTIAL Status, available datasets and opportunities BIHAR ODISHA WEST BENGAL JHARKHAND ASSAM MEGHALAYA TRIPURA 0 60 120 180 240 30 KM BENGAL PURNEA BASIN LEGEND CBM BLOCK NELP BLOCK DSF BLOCK HELP BLOCK 2D SEISMIC 3D SEISMIC WELLS ONLAND BASIN SEDIMENTARY BASIN SHALLOW WATER BASIN DEEPWATER BASIN DGH Internal As of March 1, 2023, NDR, for Bengal-Purnea basin has archived 67,437 LKM of 2D seismic data, 66,243 SKM of 3D seismic data, 98 drilled well information which includes CBM wells too. Under OALP Bid Round VIII, one shallow water block of 5,755 sq km area has been offered. In the upcoming Offshore Mega OALP Round IX, there is an opportinity of 19,979 sq km prospective areas that are carved into two blocks, one located in shallow-water and the other in ultra-deepwater. In Bengal onland sub-basin, 2 CBM blocks with cumulative acreage of 761 sq km are on offer under Special CBM Bid Round 2022. The blocks are spread one each in Jharkhand and West Bengal. In terms of awarded acreage that are now active in Bengal-Purnea basin, 4,775 sq km lie under NELP, 11,616 sq km are under HELP, 541 sq km lie under DSF, 991 sq km are under CBM. The basin had witnessed a significant discovery (NELP Block) in Upper Miocene reservoirs at the well, Asokenagar-1. Gas in upper zone and oil in lower zones were notified to be potential discoveries in 2019. As a part of ease-of-doing- business, the oil discovery was approved for early monetization. The discovery has led to a spate of intense exploration activities in the area, including appraisal drilling for discovered pools and a renewed subsurface understanding of reservoir development and supporting play system elements. Under National Seismic Programme, conducted during 2016-22 in unappraised onland areas, 911 LKM broad-band 2D seismic data were acquired in the basin.