India's Hydrocarbon Outlook – 2022-2023

61 DGH: 3 DECADES OF UNLOCKING INDIA'S HYDROCARBON POTENTIAL The play-level undiscovered (risked) hydrocarbon inplace for Onshore area is tabulated below: The play-level undiscovered (risked) hydrocarbon inplace for Offshore area is tabulated below: The onland part of the sub-basin is spread into the state(s) of Odisha. 36 MMTOE 17 MMTOE 4 MMTOE 16 MMTOE 21 MMTOE 42 MMTOE 20MMTOE 105 MMTOE Cenozoic Tertiary: Cenozoic Pliocene: Mesozoic Cretaceous: Cenozoic Miocene: Cenozoic Miocene (Middle, Biogenic): Cenozoic Miocene (Middle, Thermogenic): Cenozoic Oligocene: Cenozoic Eocene: Mesozoic Cretaceous: Cenozoic Paleocene: 2 MMTOE 42 MMTOE Status, available datasets and opportunities In terms of awarded acreage that are now active in Mahanadi basin, 18,425 sq km are under HELP. Under National Seismic Programme, conducted during 2016-22 in unappraised onland areas, 2,481 LKM broad-band 2D seismic data were acquired in the basin. As of March 1, 2023, NDR, for Mahanadi basin has archived 70,493 LKM of 2D seismic data, 57,737 SKM of 3D seismic data, 41 drilled well information. Under OALP Bid Round VIII, one ultra-deepwater block of 9,717 sq km area has been offered. In the upcoming Offshore Mega OALP Round IX, there is an opportinity of 37,503 sq km prospective areas that are carved into four blocks, all located in ultra-deepwater. The area towards the southern part outside the current basin boundary have data. This area was however excluded during the 2017 resource study for lack of congruence check with basin. The area is proposed to be taken up along with KG basin in the next periodical assessment. ODISHA ANDHRA PRADESH 0 40 80 120 160 20 KM MAHANADI BASIN LEGEND HELP BLOCK 2D SEISMIC 3D SEISMIC WELLS ONLAND BASIN SEDIMENTARY BASIN SHALLOW WATER BASIN DEEPWATER BASIN DGH Internal