Publications

Oil production in a reservoir will deplete over time. This is due to the inability of oil to be fully produced to the surface with primary production stages. To optimize oil production that is still lagging behind in the reservoir, secondary production stages need to be carried out. One method is Enhanced Oil Recovery (EOR). Sustainable oil production from Enhanced Oil Recovery (EOR) increases the percentage of global oil production. However, not all EOR methods can be applied to a reservoir, due to different reservoir characteristics. In-Situ Combustion is one method that uses high-temperature hot steam which aims to reduce oil viscosity so that hydrocarbon mobility increases and can be better optimized in production. In this study, simulations were carried out to study the advantages and disadvantages if this method was implemented in Talangakar Formation. Based on previous researches, the Central Ardjuna Sub-basin of Talangakar Formation, North West Java Basin has the following parameters: 35.8 � to 42.4 � degree of API, low sulfur content, sandstone lithology, 9.1 meters reservoir thickness, 8421 feet reservoir depth, and a temperature of 420 � C. The In-situ combustion process begins when an oxygen-filled gas is injected through an injection well into the reservoir. The oxygen gas then undergoes a reaction with oil in the reservoir so that combustion can occur and produce high temperatures. The combustion in result produces high temperatures in the reservoir and lowers the oil viscosity allowing oil to flow easier. From this method, there are several challenges and opportunities, namely: the requirement of additional tools to inject air but this method can be applied to deep reservoirs with heat sources that can come from anywhere, thus relatively easy to obtain and has economic value.