摘要
利用两性表面活性剂十六烷基磺基甜菜碱(HDAPS)、阴离子表面活性剂十二烷基硫酸钠(SDS)和助剂在高盐条件下制备两种蠕虫状胶束体系,即HDAPS-SDS体系和HDAPS-SDS-0.2%助剂混合体系,研究体系的黏弹性能、降低油水界面张力性能和驱油效果。结果表明,质量分数为0.73%的HDAPS-SDS体系所形成的蠕虫状胶束在60℃时黏度为42.3 mPa·s,与原油界面张力最低值为6.0×10-2mN·m-1;加入0.2%助剂后,0.73%HDAPS-SDS体系的黏度提高到51 mPa·s,并可与原油达到6.7×10-3mN·m-1的超低界面张力;两种新型蠕虫状胶束具有流度控制和降低油水界面张力的双重作用,具有较好的驱油效果。
Two types of wormlike micelles systems were prepared using zwitterionic（ N-hexadecyl-N,N-dimethyl-3-ammonio-1-propane sulfonate,HDAPS）,anionic（ sodium dodecyl sulfate,SDS） surfactants,and chemical additive at high salinity simulated water,which are HDAPS-SDS system and HDAPS-SDS with 0. 2% auxiliary chemical mixed system,respectively. And the viscoelasticity,properties of reducing oil / water interfacial tension,as well as the oil displacement efficiency of the wormlike micelles were investigated. It is found that the viscosity of 0. 73% mass fraction HDAPS-SDS system is 42. 3 mPa ·s at 60 ℃,and the minimum dynamic interfacial tension between crude oil and water is 6. 0 ×10^-2mN·m^-1. By adding 0. 2% chemical additive,the viscosity of 0. 73% HDAPS-SDS is increased to 51 mPa·s,and the oil / water interfacial tension is reduced to ultralow level of 6. 7 × 10^-3mN·m^-1. Due to the dual functions of mobility control and reducing the oil / water interfacial tension,the two new wormlike micelles present good oil displacement efficiency as flooding systems.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第2期159-164,共6页
Journal of China University of Petroleum(Edition of Natural Science)
基金
国家自然科学基金项目(21273286
51104169)
中央高校基本科研业务费专项(13CX02045A)
长江学者和创新团队发展计划项目(IRT1294)
山东省'泰山学者'建设工程项目(20070704)
霍英东教育基金基础性研究课题(141047)
关键词
蠕虫状胶束
耐盐
黏弹性
油水界面张力
驱油效果
wormlike micelle
salt tolerance
viscoelasticity
oil /water interfacial tension
oil displacement efficiency
