The separated produced water from the hydrocyclone is routed to the Produced Water Treater Vessel to further enhance oil and water separation, The Primary function of treater vessel is to degas the produced water. As the pressure is reduced from the hydrocyclones, the gas bubles that are liberated rise within the water in the degasser and capture and separate the small, finely dispersed oil droplets. Larger oil droplets are removed by internal weir.
After treatment, produced water is re-injected back into reservoir via the Produced Water Injection Pumps. produced water treater process schematic is shown as following: