The Importance of PVT and Trap Analyses in the Distribution of Hydrocarbons in the Malaysian Basins

This study suggests that the distribution of oil and gas accumulations of the Malaysian basins is predominately controlled by the saturation pressure regime, which defines the depth range of a dual phase system. Therefore, even though the underlying source rocks are expelling a gas-condensate hydrocarbon mixture – typically in single vapour phase, the interaction between the pressure regime and the trap characteristics still allows the accumulations of liquid pools.

In conclusion, it is important to analyze petroleum systems with a holistic approach. Once charge is established, the focus needs to be shifted to the trap geometry and its physical characteristics in relation to its seal capacity. Analyzing these relationships at a regional to semi-regional scale, would be the most effective analytical modeling method to predict and commercially exploit the remaining material liquid potentials still present in the Malaysian basins.