Publications

Carbon Capture Storage (CCS) is a technology that capture carbon dioxide (CO2) emissions from industrial sources like coal-fired power plants and factory, and store it in geological formations. These formations can include coal seams, sandstone reservoirs, and carbonate reservoir. Understanding how stratigraphic heterogenity controls CO2 dispersal in a succession of sedimentary reservoirs is critical to optimizing CCS programs. This research focuses on the Talang Akar Formation in East Baturaja District, providing a flow analog unit model based on sand cliff outcrops. The study involved 3D outcrop modeling to capture sedimentation patterns, facies characteristics, geometric measurements of channel deposits, and flow unit modeling. This research identified four sedimentary facies in the area: planar bed flow (Sh), transverse bars (Sp), scour fills (Ss), and overbank deposit (Fm). A geometric model of the seismic reservoir was also created from outcrop photos. The findings reveal that planar bed flow (Sh) facies with laminated sandstone exhibit good porosity with low shale content and high flow units, making them favorable for CO2 injection. In contrast, scour fills facies (Ss) and transverse bars (Sp) have medium porosity, while overbank deposits show low porosity. These parameters, including grain size, packing, roundness, specificity, and sediment structures, are critical for determining the suitability of different facies for CCS applications.