Integrating Seep Geochemistry and 2D Seismic for 3D Basin Petroleum Systems Modelling in the MSGBC Basin

Summary We utilise a large database of regional 2D seismic, integrated with detailed geochemistry of surface (micro)seeps, to build a 3D Basin & Petroleum Systems Model for the MSGBC Basin, NW Africa. The study indicates that at least 2 oil groups can be distinguished based on facies indicators; 1) marine carbonate and 2) more clastic origins. Integrated with 1-D, 2-D & 3-D thermal-burial modelling in the different segments of the basin, we demonstrate that some industry preconceptions around the lack of source presence and maturity are unfounded, with mature mid-Cretaceous and Jurassic source rocks predicted in both the basin (where many discoveries exist), but also in the deep offshore (a source for the FAN-1 discovery).