弱碱型三元复合驱采出水稳定性及反相破乳剂的应用

Stability of Oilfield ASP Flooding Produced Water and Application of Emulsion Demulsifier

通过对模拟三元复合驱含油污水含油量和油珠粒径的测试,研究其稳定性。同时,对反相破乳剂ASPD-α进行了评价。结果表明,少量聚合物可以显著改善模拟三元复合驱的油水分离特性。模拟三元复合驱含油污水的油珠粒径随水相弹性膜量的增大而增大。反相破乳剂ASPD-α的破乳效果和它的聚并作用随碱、表面活性剂和聚合物含量的增大而降低。

This paper is intended to discuss the stability of oilfield ASP ( alkaline, surfactant and polymer) Flooding produced water and the effect of ASPD - a by testing the quantity of oil from water and oil - drop diameter. The results indicate that a small quantity of polyac rylamide can improve the stability of ASP flooding produced water significantly. The higher the elastic modulus of liquid becomes, the bigger the oil - drop diameter increases. With the increasing of alkaline, surfactant and polymer, the emulsion demulsifier and coalescence effect of ASPD -α was weakened.