XSY-11双子表面活性剂提高采收率应用研究

通过测定双子表面活性剂与原油的界面张力,发现双子表面活性剂在缺碱的条件下,也可以使油水界面张力降低至超低的能力,证明了其对碱的依赖性较小,优于普通表面活性剂.单独使用双子表面活性剂或者与其他表面活性剂协同使用,均可以使多种原油-水界面张力降低至超低范围.对双子表面活性剂溶液浓度等因素对油水界面张力的影响程度进行了分析.发现双子表面活性剂降低油水界面张力的能力主要与表面活性剂和油的性质密切相关.研究了其界面张力行为,发现双子表面活性剂具有比普通表面活性剂较高的界面活性,并且与盐具有很好的协同性,可以在较宽的盐度和表面活性剂浓度范围内降低油水界面张力至超低范围.

Study on Application of XSY-11 Gemini Surfactants in Enhancing Oil Recovery

Through the determination of interfacial tension between Gemini surfactants and crude oil,it’s found that Gemini surfactants in the condition without alkali can also make the oil-water interfacial tension reduce to an ultra-low level,which has proved that Gemini surfactants have less dependence on alkali,and are better than ordinary surfactants.Single use of Gemini surfactants or combined use of Gemini surfactants with other surfactants can make oil-water interfacial tension reduce to an ultra-low range.In this paper,influence of Gemini surfactants solution concentration on oil-water interfacial tension was analyzed.It’s found that ability of Gemini surfactants to reduce the interfacial tension can mainly be affected by properties of surfactants and oil.The interfacial tension behavior of Gemini surfactants was studied.It’s found that Gemini surfactants exhibit higher interfacial activity than ordinary surfactants,and have good cooperativity with salts,can decrease oil-water interfacial tension to ultra low range in a wide range of salinity and surfactants concentration.