Publications

The South Sumatra Basin is well known as prolific hydrocarbon province; however, this study offers an opportunity at under-explored area in North Palembang sub-basin. The study focused on the extent of proven field along NW-SE ridge. The geological history was marked by NE-SW Paleogene rifting that was intersected by Middle Miocene and Plio-Pleistocene NW-SE inversion trend. These two structural lineaments are observed on seismic. the NE-SW Paleogene controls the development of syn-rift sequence, which is reflected on the syn-rift isopach map. Based on seismic facies and biostratigraphy, the syn-rift sequence consists of lacustrine, alluvial fan, and fluvial. these are product of transgression system, furthermore known as the Lemat and Talang Akar Formations. The syn-rift sequence is overlain by Telisa shallow marine sequence and shales which are the post-rift sequence. The existence of a proven field in this area proves the working petroleum system. The source rock is the lacustrine of Lemat shale which has reached certain degree of maturation in the SE part of the structure. This source rocks produced the heavy oil. The reservoirs are transgressive upper Lemat and lower Talang Akar sandstone. The seals are the intraformational shale of Talang Akar and the regional shale of Telisa shale. The trap is a fault-bounded anticline. A detail seismic mapping indicates the extent of structural trend which may lead to hydrocarbon entrapment.