The Petroleum Systems of South Sulawesi, Indonesia

Abstract South Sulawesi is a frontier petroleum exploration province with proven source rocks, reservoir rocks, hydrocarbon generating kitchen areas and, most importantly, hydrocarbon accumulations. Situated at the eastern margin of the Sundaland craton, it is located in a complex tectonic region at the junction of three major colliding plates. Western Sulawesi, the Makassar Straits and large parts of eastern Kalimantan developed as an area of widespread early Tertiary basin formation. The transgressive sequences filling these basins are commonly composed of marginal marine clastics passing upwards into carbonates overlain by deeper marine sediments. In South Sulawesi, late Tertiary magmatism and subsequent Pliocene orogenesis has resulted in the formation of multiple kitchen areas within portions of these basins with associated structures capable of trapping hydrocarbons.