Proceedings Title : Proc. Indon. Petrol. Assoc., 49th Ann. Conv., 2025
The Cipari District, situated within the tectonically active Banyumas Basin in Central Java, Indonesia, is a promising area for hydrocarbon exploration due to its complex tectonostratigraphic framework and the presence of oil and gas seepages that indicate hydrocarbon potential. This study employs an integrated geological and geophysical approach combining mapping, measuring sections, gravity analysis, and fault fracture density (FFD) analysis to evaluate the region's hydrocarbon prospects. Unlike previous studies that focused on singular methods, this research provides a comprehensive tectonostratigraphic framework by integrating multiple datasets to enhance hydrocarbon prospectivity assessments. Geological mapping and measuring section analysis revealed variations in lithology, stratigraphic thickness, and depositional environments, indicating a deep marine setting dominated by the Halang and Kumbang Formations—identified as potential reservoir-seal pairs. Gravity data analysis detected subsurface density contrasts and provided insights into basin geometries, structural highs, and potential traps, with gravitational acceleration values ranging from 45.4 mGal to 66.3 mGal, reflecting the structural complexity of the basin. FFD analysis identified dense fault zones that may serve as hydrocarbon migration pathways and secondary reservoirs, enhancing the permeability of fractured rocks. The novelty of this study lies in its integrated approach, which combines structural and stratigraphic analysis with gravity-based fault delineation, allowing for a more refined assessment of hydrocarbon potential in tectonically complex basins. Preliminary results suggest that the tectonic evolution of Cipari District created favorable conditions for hydrocarbon generation, migration, and accumulation. Structural traps, such as fault-bounded anticlines and stratigraphic pinch-outs, were identified as key prospective zones, while high FFD zones further highlight areas with enhanced hydrocarbon potential. This study concludes that the Cipari District possesses significant hydrocarbon prospects, warranting further exploration. Seismic surveys and exploratory drilling are recommended to validate these findings and refine resource estimates. The integration of geological and geophysical methods in this research provides a robust model for hydrocarbon exploration, offering a novel framework that can be applied to other tectonically active basins worldwide.
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