中文摘要：

实验研究钠蒙脱土颗粒对模拟的聚合物/表面活性剂二元复合驱采出水乳化稳定性的影响,通过zeta电位、界面张力和黏弹模量的测试进行体系稳定机理的探讨。结果表明,当聚合物和表面活性剂的浓度一定时,随着钠蒙脱土颗粒质量浓度的增加,zeta电位和界面张力降低,黏弹模量升高,采出水稳定性逐渐增强,当质量浓度达到150 mg/L时,采出水乳化稳定性最强,采出水最难处理;进一步增大钠蒙脱土颗粒质量浓度,界面张力升高,黏弹模量降低,体系稳定性减弱,有利于采出水的处理。当钠蒙脱土颗粒质量浓度一定时,随表面活性剂和聚合物浓度增加,zeta电位和界面张力降低,黏弹模量上升,体系乳化稳定性增强,进一步增加了采出水的处理难度。

英文摘要：

The effects of Na-montmorillonite （Na-Mt）particles on oil-water separation and the interracial properties of simulated produced water from polymer/surfactant flooding were investigated. And the stability mechanism was analyzed through measuring the zeta potential,oil-water interfacial tension and dilational viscoelasticity. The results showed that when the concentrations of polymer and surfactant were constant, with increasing of Na-Mt particle concentration, the stability of the produced water enhanced with decreasing the zeta potential and interfacial tension and increasing the dilational viscoelasticity;When the concentration of Na-Mt particle was 150 mg/L, the stability was the strongest and the produced water was most difficult to deal with; As the concentration of Na-Mt particles in- creased,the emulsion weakened with decreasing dilational viscoelasticity and increasing interfacial tension, and could contribute to the treatment of produced water;When the concentration of Na-Mt particles was constant, with the increase of polymer and surfactant con- centration,the emulsion stability enhanced with decreasing the zeta potential and interfacial tension and increasing the dilational vis- coelasticity, which made it more difficult to treat the produced water.