摘要
微乳土酸在石油与天然气开采方面有着重要的潜在应用价值。今以柴油、土酸、表面活性剂和助表面活性剂为主要原料,制备了缓蚀性能良好的微乳土酸体系。考察了阳离子表面活性剂CTAC和非离子表面活性剂AEO9的配比对微乳土酸体系70℃下的稳定性、增溶性的影响,并给出了解释。通过添加CaCl2对微乳土酸体系的耐盐性进行了研究。比较了微乳土酸体系和同等浓度下的常规土酸分别与石英砂、碳酸钙、标准钢片的反应,结果表明,与相同酸浓度的土酸溶液相比,柴油微乳土酸体系的缓蚀效果显著。当乳化剂为下列组成时:CTAC/AEO9=3:2,正丁醇/正辛醇=1:2,助表面活性剂/表面活性剂=1:2,可得到较大的微乳土酸单相区。
Microemulsified mud acid has important applications in the extraction process of petroleum and natural gas. The high performance diesel oil microemulsified mud acid system （DOME mud acid system） which consists of diesel oil, mud acid, surfactants and co-surfactants was prepared. The stability of the prepared DOME mud acid systems at 70℃ and the maximal dissolution capacity of the acid under different mass ratios of the surfactants CTAC/AEO9 were investigated. The salt endurance of the prepared DOME mud acid system was observed by adding CaCl2 in it. The reacting properties of the prepared DOME mud acid with steel, quartz sand and marble were investigated respectively, and the results show that the corrosion inhibition performance of the DOME mud acid system is remarkable compared with the same concentration mud acid solution. It was found that a big single phase region of microemulsified mud acid can be obtained when the emulsifier mixture was composed as follows： the surfactants ratio CTAC/AEO9=3：2, co-surfactants ratio n-butanol/n-octanol=1：2 and the ratio of co-surfactant to surfactant equal to 1：2.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2009年第4期684-689,共6页
Journal of Chemical Engineering of Chinese Universities
基金
上海市博士后科研资助计划资助
关键词
乳化酸
微乳土酸
缓蚀
乳化剂
emulsified acid
microemulsified mud acid
corrosion inhibition
emulsifier
