Publications

The South Sumatra Basin is one of the most prolific basins in Indonesia with estimated total recoverable reserves of 8,046 million barrels of oil equivalent (IHS, 2016) from four main plays including (1) Pre-Tertiary Fractured Basement, (2) Oligocene Talang Akar Sandstone, (3) Lower Miocene Baturaja carbonate, and (4) Lower to Middle Miocene Gumai Sandstone plays. Previously, most of the wells drilled in the study area were targeting the deeper intervals and did not consider the Gumai interval as one of the potential drilling objectives. However, recent drilling campaigns in the study area have showed encouraging results from the Gumai play which encountered high gas reading in stringers sandstones which has triggered a look back analysis on the Gumai interval. The geological data evidence are aligned by seismic inversion results both deterministic and geostatistical which correlated with the presence of reservoirs. The integrated quantitative interpretation shows three sandstone units, two of which have good reservoir porosities and potential to be trapped with hydrocarbon. These promising results are of paramount significance for further hydrocarbon exploration strategic planning.