新型羟基磺基甜菜碱/聚丙烯酰胺二元复合体系性能评价  

Performance evaluation of a new hydroxyl-sulfobetaines and polyacrylamide combined systems

作　　者：殷代印[1] 姜婷婷[1] 

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163318

出　　处：《应用化工》2017年第5期844-847,853,共5页Applied Chemical Industry

基　　金：国家自然基金资助项目(51474071)

摘　　要：新型羟基磺基甜菜碱表面活性剂与相对分子质量为2 500万的聚丙烯酰胺进行复合,测定体系的界面张力、黏弹性及乳化性能。结果表明,新型羟基磺基甜菜碱表面活性剂在浓度2.16 mmol/L时,表面张力33.39 m N/m,且乳化性能较好,具有较好的表面活性剂性能。相比于单独的表面活性剂,二元复合体系使溶液的临界胶束浓度增大,且界面张力也升高。当表面活性剂浓度为1.3 g/L,聚合物浓度为0.5 g/L时,体系的界面张力达到最低。聚合物的加入能显著降低体系的粘弹性,且随着聚合物浓度的增加,出现黏度最大值的表面活性剂的浓度越低。当表面活性剂水溶液质量浓度1.3 g/L,聚合物浓度1.5 g/L时,体系乳化性能最佳,实验表明,在低渗透岩心中,可以提高采收率5.78%。The new hydroxyl-sulfobetaines and the relative molecular mass of polyacrylamide is 25 million are prepared to enhance the oil recovery. The interfacial tension, viscoelasticity and emulsifying property of the system are evaluated. The results showed that the surfactant properties of the new hydroxyl-sulfobe-taines is good,the surface tension can be reached to 33.39 mN/m when the concentration is 2.16 mmol/L. Compared to the surfactant,the critical micelle concentration （ CMC） of the combined system is increa-ses ,and the interfacial tension become greater. The interfacial tension of the system reaches the minimum when the surfactant concentration is 1.3 g/L and the polymer concentration is 0. 5 g/L. The viscoelastici-ty of the system can be reduced by the addition polymer significantly, and with the increase of polymer concentration, the concentration of surfactant with the maximum viscosity gets lower. The best emulsifying properties can be obtained when the surfactant concentration is 1.3 g/L and the polymer concentration is 1.5 g/L. At last,an indoor flooding experiment is carried out to evaluate the combined system,the experi-ment showed,the oil recovery rate can improve 5.78% in low permeability core.

关 键 词：新型羟磺基甜菜碱 界面张力 黏弹性 乳化性 采收率 

分 类 号：TQ423[化学工程]