Abstract

Upper Assam shelf is an important petroleum province with multiple reservoir rocks ranging from Upper Paleocene to Miocene. Most of the oil reservoirs are within Tipam sequences of Mio-Pliocene and Barail of Oligocene age. Prolific source rocks (SRs) occur within the Barail (Oligocene) & Kopili (Eocene). Established SRs in shelf area are immature to early mature while the oils have been generated at comparatively higher maturation stage. Hence, the present work has been taken up with an aim to characterize different source organofacies including custom kinetics and its variation within source sequences to evaluate timing and extent of hydrocarbon generation