Impact of Low Salinity Water Injection on CO2 Storage and Oil Recovery for Improved CO2 Utilization

CO2 utilization for oil recovery applications is often impacted by the challenges such as viscous fingering and its premature breakthrough. Injection of slugs water-alternating-gas (WAG) generally aims to overcome these though control mobility. Moreover, potential WAG largely dependent on injection water salinity subsequent dissolution storage. Therefore, effect varying (0–4 wt% NaCl) loading capacity investigated in this study, at two test temperatures 323 K 363 three confining pressures 4, 8, 12 bar, subsequently, flooding experiments were performed find low (LS)-WAG process suitability from porous sandstone rocks. The inclusion salt was found significantly affect water. At higher NaCl concentration (4 wt%), decreased 50% demonstrated absorption kinetic study. LS-WAG suggested maximum 55–58% original place 2 both temperatures. Increment pressure had a positive impact while increasing temperature showed reverse behavior. As result LS adsorption it anticipated that reduction favorable factor storage performance injection. instance also varied sand-packs reported. Oil results similarly effective all stages cycle long remained lower than NaCl. Based findings recommended implement conjunction with (LSW) moderate saline conditions, which key importance various where differs large scale.