中文摘要：

采用超临界CO2、H2O和表面活性剂聚乙二醇三甲基壬基醚（TMN-6）构建了水包C02的乳液体系，探索了CO2／水乳液体系的形成条件，利用高压落球黏度计测试了CO2/水乳液体系的黏度，考察了TMN-6质量浓度、体系温度、CO2压力及mH2O：mCO2对乳液体系黏度的影响。实验结果表明，在25～40℃，10～25MPa，mCO2：mH2O=（2：8）～（5：5），TMN-6质量浓度在0．2％～1．5％条件下，可形成稳定的CO2／水乳液体系；乳液体系的黏度随TMN-6质量浓度的增加、CO2压力的升高、温度的降低及mH2O：mCO2的增加有不同程度的增大，且随着TMN-6质量浓度的增加，CO2/水乳液体系黏度与温度和压力的相关性也逐渐增加。

英文摘要：

CO2/water emulsion could be formed using supercritical CO2, H2O and surfactant poly （ethylene glycol） 2, 6, 8-trimethyl-4-nonyl ether（TMN-6）. The formation conditions for CO2/water emulsion were investigated. The viscosity of the CO2/water emulsion was measured using the high pressure falling ball viscometer. The effects of the surfactant concentration, temperature, CO2 pressure and mH2O ：mCO2 on the emulsion viscosity were studied. The results showed that the viscosity of the emulsion was much higher than that of CO2 or water. At 25-40 ℃, CO2 pressure of 10-25 MPa, mH2O ： mCO2 between （2 ： 8）- （5 ： 5）, and TMN-6 concentration（w） of 0.2%-1.5%, the viscosity of CO2/water emulsion increased with increasing the TMN-6 concentration, CO2 pressure and mH2O ： mCO2, and decreasing the temperature. In addition, it was showed that the dependence of the CO2/water emulsion viscosity on temperature and pressure were gradually enhanced with increasing surfactant concentration.