The Effect of Co2-Brine-Rock Interaction Towards Sand Onset Modeling in Dolomite-Rich Sandstone: A Case Study in Air Benakat Formation, South Sumatera, Indonesia

Prasandi Abdul Aziz (Department of Petroleum Engineering, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung)
Bagus Endar Bachtiar Nurhandoko (Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung)
Taufan Marhaendrajana (Department of Petroleum Engineering, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung)
Utjok W.R. Siagian (Department of Petroleum Engineering, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung)
Tutuka Ariadji (Department of Petroleum Engineering, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung)

Scientific Contributions Oil and Gas
Vol 47 No 3 (2024)

Carbon Capture Utilization Storage (CCUS) into geological storage (e.g., Enhanced Oil or Gas Recovery) provides a solution to reduce CO2 emissions yet remains a potential operational problem, such as sand problem phenomena in producer well. This study performs several experimental works (i.e., time-lapse dry mass measurements, , X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM) and elastic wave measurements) by using CO2-brine-rock batch experimental setup to observe mineral dissolution, pore structures alteration as well as rock physics alteration due to CO2-brine-rock interactions.This study used an outcrop sample of dolomite-rich sandstone from Air Benakat formation, South Sumatera, Indonesia. Our experimental works observed dolomite dissolution, secondary porosity development as well as rock strength reduction indirectly due to CO2-brine-rock interactions. The results of elastic wave velocity measurements (i.e. P & S waves) were then used to modify a considerable sand onset prediction model. Thus, the modified model demonstrates that considering CO2-brine-rock interactions could help to design better sand management strategy in producer well.