Publications

This paper describes a geochemical investigation of source rocks and oil samples in the West Kampar Block and its surrounding area in order to define a geochemistry framework for a better understanding the active petroleum system in the block. During the evaluation, geochemical data of source rock from surface and subsurface samples were investigated utilizing rock-eval pyrolisis, carbon isotope, GC and GC-MS techniques. Molecular geochemical properties of oil samples within and adjacent the block were also carefully studied using various cross plots and methods. This study indicates that oils found in the south of the block was sourced from a predominantly algalamorphous derived kerogen deposited in a shallow lacustrine environment, while oils found to the northern of the block was derived from a predominantly terrestrial kerogen deposited in a swamp environment. Oil-source correlation demonstrates that the southern oils correlate to a 25-75 m thick of excellent source rock from the Pematang sequence that partially outcropping in the marginal basin location. On the other hand, the northern oils correlate to a widespread swamp facies in the northern area. All these findings suggest that shallow depressions in this region are also productive in generating hydrocarbon and this should drive future exploration strategies for the block.