Variation in Biomarker Distributions for a Lower Coastal Plain Source Rock Sequence in the Malay Basin

In this study, an attempt is made to integrate biomarker parameters with biofacies interpretations determined from palynomorph and foraminifera assemblages, sedimentological features and bulk geochemical properties. This is to investigate the biomarker signatures for various depositional environments. For this purpose, a well preserved 100-meter cored section from the Tangga Barat-3 well drilled in the Malay Basin was selected. This section transects lower coastal plain depositional environments within the Late Middle Miocene. Vitrinite reflectance measurements ranging from 0.4 – 0.5% indicate that the source rock intervals are immature for hydrocarbon generation. The immaturity of these sequences makes identification of biomarkers more challenging.