摘要
在十二烷基磺酸钠(简称AS)—醇—正庚烷—盐水体系中,它们能形成多相区微乳液,即中相微乳液与过剩盐水相和过剩油相达到三相平衡.本文系统地研究了表面活性剂的浓度(0.5—6.0%),醇的种类(正丙醇,正丁醇、正戊醇、正已醇)和其浓度(1.0-8.0%)对该体系的中相微乳液的形成和其特性的影响。这些特性(最佳含盐量S,盐宽△S,增溶参数,界面张力等),对提高三次采油的驱油效率是非常重要的。本文得到一些规律,并从理论上探讨,这对三次采油是具有指导意义。
Study of phase behavior in heptane/sodium dodecyl sulfonate(AS)/alcohal brine systems conatining highly purified surfacant is investigated using concentration scanning and interfacial tension methods.The effective regularities of the concentration of AS from 0.5% to 6%, the concentration of n-alcohol from 1% to 8% and the kind of n-alkanol form C_3 to C6 on both the formation of the middle phase microemulsions and physics chemistry properties have been investigated. Some rules are worked out, which are belived to be of practical importance to tertiary oil recovery.
基金
国家自然科学基金
