Eight 2D regional lines have been evaluated using a Petroleum System Modeling approach as part of a regional prospectivity assessment in offshore southern Mexico. Reconstruction of salt movement through time is a critical component of Petroleum System Modeling in complex areas such as offshore Campeche. The sensitivity of modeling results to variability in source rock burial depth resulting from uncertainty in the velocity model used for seismic depth migration is evaluated via a series of scenarios. Modeling results show that the present source rock maturity can vary significantly over small distances due to the tectonic complexity of the region and due to local effects related to allochthonous salt canopies. An additional objective of this study is an understanding of the timing relationships between hydrocarbon generation, trap formation, and seal development across different areas of the basin offered for lease in upcoming bid rounds. Lease area were ranked using a matrix considering the level of source maturity, expected hydrocarbon phase, and timing of trap and seal development as the primary criteria. An example of the results for a highly-ranked block is presented, where the timing of light oil generation is expected to be favourable relative to trap formation and seal development.


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