India’s Hydrocarbon Outlook 2024 68 A Report on Exploration & Production Activities 3. ASSAM-ARAKAN FOLD BELT (AAFB) BASIN Assam-Arakan Fold Belt (AAFB) is a Category I basin, implying that the basin has significant commercial discovered inplace, potential to be produced at an optimum level. The basin is characterized primarily by siliciclastic deposits of fluvial to shelf margin setup, situated in the northeast region of Indian peninsula. Commercial hydrocarbon occurrences are mainly encountered within Miocene and Pliocene formation except some small discoveries in Oligocene and Eocene sequences. Several gas pools have been discovered within the structural closure while hydrocarbon accumulations often indicate charging from deeper sequences. The basin hosts a thick pile of tertiary sediments, ranging from Paleocene to Recent, which overlies the archean basement consisting of granitic and metamorphic rocks. Mio-Pliocene petroleum system is discovered and producing. Deepest Oligocene play (Renji) is yet to be thoroughly explored. All proven system has significant risked resources. The fact that structural traps primarily had formed since Miocene, sequential restoration and migration of thrusts are the focus area. Source: DGH Internal Source: DGH Internal The geographical area of the basin partially overlaps with the state(s) of Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland and Tripura.
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