Abstract:
Foam flooding has been studied for more than 30 years in TOR (tertiary oil recovery).Being widely used in the field,it has seen good effect.Aiming at the character- istics of the high salt and temperature-resistant oil reser- voir,the salt resistance of several kinds of foam stabilizer has been evaluated respectively in different salt types,un- der the temperature of 80℃.The selected foam stabilizer HXYP has the optimal salt-resistant capability.Com- posing of 0.2% foam stabilizer HXYP and 0.2% foaming agent HXY-1,the foaming system has excellent charac- teristics when the concentration of sodium chloride/calci um chloride or salinity is 16×104mg/L,4×103mg/L, 14.18×104mg/L respectively under the same temperature of 80℃.