聚合物驱采出液化学破乳机理研究

Study on Chemical Demulsification Mechanism of Produced Liquefaction in Polymer Flooding

为解决原油乳状液给原油开采、集输、管输和炼化带来的困难,本文通过对破乳剂、絮凝剂和磁性纳米粒子溶液进行对比实验,筛选出分水效果最佳的破乳剂种类和浓度。实验结果表明,破乳剂浓度为0.1%的情况下,破乳剂优选RKP-15,最佳浓度为0.0075%;有机絮凝剂中,优先选择非离子聚丙烯酰胺(PAM)作为絮凝剂,不选无机絮凝剂;在筛选磁性纳米粒子的过程中,优选浓度为0.005%的羧基化四氧化三铁溶液。

In order to solve the difficulties caused by crude oil emulsion in the exploitation,gathering,pipeline transportation and refining of crude oil,this paper screened the types and concentration of demulsifiers with the best water separation effect,through the comparative experiments of demulsifiers,flocculants and magnetic nanoparticle solutions.The results showed that RKP-15 and 0.007 5% were the best demulsifiers when the concentration of demulsifier was 0.1%.Among organic flocculants,nonionic polyacrylamide(PAM)was preferred as flocculant rather than inorganic flocculant.In the screening of magnetic nanoparticles,the optimal concentration of carboxylated ferric oxide solution was 0.005%.