Performance evaluation of high-efficiency surfactants for tertiary oil recovery
A high-performance surfactant NHJ with temperature and salt resistance is prepared,and its interfacial tension performance,temperature and salt resistance performance,surface tension performance,adaptability to formation water and oil washing performance are evaluated through experiments.The evaluation results show that w(NHJ)0.3%solution can reduce the interfacial tension of crude oil to the order of 10-2 mN/m,with a temperature resistance of 80℃and an anti-mineralization degree of 8×104 mg/L,anti-Ca2+up to 4 000 mg/L.The surface tension of w(NHJ)0.3%solution is 21.24 mN/m,and it has good adaptability to formation water,with oil washing rate of 45%.
tertiary oil recoverytemperature and salt resistancesurfactant
万方数据
维普
