India’s Hydrocarbon Outlook 2024 63 A Report on Exploration & Production Activities 1. ASSAM SHELF BASIN Assam Shelf is a Category I basin, implying that the basin has significant commercial discovered inplace, potential to be produced at an optimum level. The geographical area of the basin partially overlaps with the state(s) of Arunachal Pradesh, Assam, Meghalaya and Nagaland. Source: DGH Internal Source: DGH Internal The Assam Shelf Basin is situated in the northeast region of Indian peninsula. Commercial hydrocarbon occurrences, besides Basement, spread over different stratigraphic intervals ranging from the oldest sediments of Paleocene (Tura) to the youngest sediments of Pliocene (Girujan). Several oil and gas fields have been discovered within structural, stratigraphic and strati-structural entrapment conditions. The basin hosts thick pile of Tertiary sediments, ranging from Paleocene to Recent which overlies Basement consisting of Granitic and Metamorphic complex. Gondwana sediments are exposed in the western extremity of Garo Hills. The basin unconformably extends up to the northern bank of Brahmaputra river. Mature source rocks lie below the Naga thrust belt, which is pivotal to future exploration focus. Shallow play near Naga-Schuppen belt remains focus area of exploration.
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