oa West Africa Pre-salt Lacustine Carbonates

During the Early Cretaceous rifting, the central segment of South Atlantic was characterized by a complex paleomorphology dominated by large lacustrine basins, that were filled by clastic and carbonate sediments and finally covered by restricted marine evaporites. These thick sequences constitute important hydrocarbon plays successfully explored in both eastern and western margins of South Atlantic. The carbonate bodies growth on paleo-highs constitutes giant fields in the Brasil offshore; in the African margin the success was lower, with good reservoirs in the Lower Congo Basin (Angola, Cabinda), and lower explorative results in the Kwanza Basin.