KSO Pertamina EP – Energi Tanjung Tiga Prabumulih uses tank 03 to separate the liquid-liquid phases. The purpose of this study was to analyze the process of separating the liquid-liquid phase in the form of oil and water in Tank 03 using the Innage method so that production efficiency results were obtained based on the final volume of oil. The research procedure was carried out with a case st…