耐高温阳离子Gemini柴油微乳盐酸体系研究

Study on High Temperature Microemulsified Diesel Hydrochloric Acid Emulsified By Cationic Gemini Surfactant

陈彦东 方 波 房鼎业 卢拥军 郝 敏

CHEN Yan-Dong FANG Bo FANG Ding-Ye LU Yong-Jun HAO Min

为获得高温微乳酸并为油气藏深度酸化提供新材料，本文以阳离子Gemini表面活性剂——丙撑基双（十八烷基二甲基氯化铵）（18-3-18）为主表面活性剂，以正丁醇和正辛醇为辅助表面活性剂、柴油为油相、盐酸为酸相，通过复配制备了含Gemini耐温柴油微乳盐酸新体系，并考察了微乳盐酸的相行为、缓速反应及耐氯化钙能力。结果表明，在适当的条件下，阳离子Gemini18-3-18柴油微乳盐酸耐温可达100℃，缓速反应性能良好，耐氯化钙能力可达到120 g/L。并且证明了阳离子Gemini18-3-18与AEO9乳化的柴油微乳盐酸耐温性能良好，可在95℃下保持稳定，有利于丰富耐高温微乳盐酸新体系。

In order to obtain high temperature microemulsified acid and provide novel acids for deep acidization of oil and gas fields, a novel high temperature microemulsified hydrochloric acid system with cationic Gemini surfactant propylene-1, 3-bis (octadecyl dimethyl ammonium chloride) (18-3-18) as main emulsifier, n-butanol and n-octanol as assistant emulsifier, diesel as oil phase and hydrocholoric acid as acid phase was prepared in this paper. The thermal stability, phase behavior, retarded reactivity and CaCl2 tolerance of the microemulsified hydrochloric acid were investigated. The results showed that, at proper conditions, cationic Gemini 18-3-18 diesel microemulsified hydrochloric acid may keep stable at 100℃，and CaCl2 tolerance reached 120 g/L. It was proved that the microemulsified hydrochloric acid emulsified by Gemini18-3-18 and AEO9 also possessed good thermal stability at 95℃. It is benefit to enrich the novel high temperature microemulsified acid systems.