Ultrasound-assisted CO flooding to improve oil recovery.

CO flooding process as a common enhanced oil recovery method may suffer from interface instability due to fingering and gravity override, therefore, in this study a method to improve the performance of CO flooding through an integrated ultraosund-CO flooding process is presented. Ultrasonic waves can deliver energy from a generator to oil and affect its properties such as internal energy and viscosity. Thus, a series of CO flooding experiments in the presence of ultrasonic waves were performed for controlled and uncontrolled temperature conditions.