ABSTRACT

We use a computerized two dimensional dynamic model for basin analysis to simulate fluid flow, heat transfer, and petroleum generation and migration processes in an offshore oil field of an evolving sedimentary basin. Through the application, we confirm that the results from the model can be used to estimate the timing and amount of petroleum generation and migration consistent with downhole data. While the estimates carry uncertainties (produced predominantly by our lack of knowledge of some geologic parameters), nevertheless we are able to bound the range of the uncertainties using the model as an experimental tool. Such effects are slightly different using a two dimensional model versus a one dimensional model. Dominant parameters most influenced pertain to reservoir character, such as porosity, permeability, shaliness, and geometry. Sensitivity testing elucidates the differences in the 1-D and 2-D fluid flow/compaction models and provides conditions for the relevant application arenas for each model.