Burial History Modeling of Mallawa Formation And Balangbaru Formation Makassar Basin, South Sulawesi Province

Amalia Yunita Puteri (1), Yarra Sutadiwiria (1*), Rendy (1), Ariq Haykal Yusuf (1), Aufariq Asaria Cifa (1)

Burial History Modeling of Mallawa Formation And Balangbaru Formation Makassar Basin, South Sulawesi Province
Amalia Yunita Puteri (1), Yarra Sutadiwiria (1*), Rendy (1), Ariq Haykal Yusuf (1), Aufariq Asaria Cifa (1)

Geological Engineering Department, Faculty of Earth Technology and Energy, Universitas Trisakti,
Jln. Kyai Tapa No. 1, Jakarta 11440, Indonesia

Abstract

Makassar Basin estimated to have hydrocarbon potential and is considered a source rock. The study aims to identify formations with potential as source rocks, based on the geochemical characteristics of source rocks and the burial history in the research area. The analysis was conducted on a single research well. From the study conducted on one well, source rock samples were obtained from the Mallawa Formation and Balangbaru Formation, which were further analyzed in geochemical analysis. The method employed in this research involves analyzing geochemical characteristics (quantity, quality, and maturity level), including Total Organic Carbon (TOC), Rock Eval-Pyrolisis (REP), Vitrinite Reflectance (VR), Van Krevelen Diagram, HI and Tmax Cross-plot. Burial history is analyzed using Petromod 1D software. The data used include top formation, biostratigraphy (paleo water depth), lithology, and TOC values. From this data, burial history modeling can be generated. The quantitative and qualitative analysis results indicate that the potential source rocks are the Mallawa Formation and Balangbaru Formation, based on the organic material content (total organic carbon). The Mallawa Formation has TOC values ranging from 0.77% to 6.11%, with Fair to Excellent quantities, type III kerogen, and Immature maturity, while the Balangbaru Formation has TOC values ranging from 0.03% to 7.41%, with Fair to Excellent quantities, type II/IIb kerogen, and Immature to Peak Mature maturity. Based on the research results, it is inferred that source rocks in the Mallawa and Balangbaru Formations have the potential to generate hydrocarbon products such as oil and gas. The burial history of the source rocks in Well AYP-1 is controlled by the sedimentation rate, basin subsidence rate, and tectonics

Keywords: Geochemistry, Burial History, Makassar Basin

Topic: Geodynamic and subsurface geology