POLYMER THICKENER IN WATER-ALTERNATING GAS PROCESS FOR OIL RECOVERY

摘要

ABSTRACT OF THE DISCLOSUREWater containing a polymer and, optionally, a surfactant isused as the water in a WAG process using CO2. The polymer functionsas a water thickening agent. Slugs of CO2 and water containing polymerare injected into an underground formation to miscibly displace oilwhich could not economically be recovered by primary or secondary waterflooding techniques.