Polymer sludge cleaning effects of different types of detergents and their influence on interfacial properties
不同类型清洗剂对含聚油泥清洗效果及界面性质的影响

To solve the oily waste and environmental pollution problem caused by the sludge generated in polymer flooding produced fluid,chemical cleaning method was selected to deal with the polymer sludge.The law of cleaning effect of different types of detergents showed that the optimal detergents were inorganic and non-ionic detergents,followed by anionic detergents,the cationic detergents were the worst.After optimizing the cleaning conditions,the deoiling rate of ingredient Na2SiO3 and ingredient EL100 could rise to 91.12% and 85.59%,respectively.There was obvious relevance between deoiling rate of different types of ingredients and the interfacial properties,that was the higher the deoiling rate,the lower the water phase conductivity,the smaller the Zeta potential value of oil droplets,the greater the median size of oil droplets,the lower the interfacial tension.