驱油用甜菜碱油水界面流变性研究  

Study on Rheology of Oil-Water Interface of Betaine for Flooding

作　　者：张红艳[1] 李泽楠 ZHANG Hong-Yan;LI Ze-Nan(School of Petroleum Engineering,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]东北石油大学石油工程学院,大庆163318

出　　处：《当代化工》2021年第9期2050-2053,共4页Contemporary Chemical Industry

基　　金：黑龙江省普通本科高等学校青年创新人才基金(项目编号:UNPYSCT-2018041)。

摘　　要：通过室内实验的方法,运用美国TA公司生产的流变仪对两个系列的甜菜碱表面活性剂开展了一系列研究,实验结果表明,甜菜碱分子的亲水亲油平衡性随着分子长链烷基基团的碳原子个数不同而存在差别。当A系列甜菜碱长链烷基碳原子个数为14、B系列甜菜碱长链烷基碳原子个数为16时,甜菜碱分子亲水亲油性达到平衡,相较于同系列其他甜菜碱分子更易在油水界面吸附,且吸附后不易脱附,形成的界面膜强度最高。甜菜碱溶液存在一个最佳质量分数,达到此质量分数时,甜菜碱分子吸附到油水界面所形成的界面膜最牢固。B系列甜菜碱跟A系列相比,分子基团上引入了OH基,界面分子由于OH基间的相互作用使得界面分子排列紧密性增强,界面膜抗扰动能力更好。The rheological properties of betaine at oil-water interface were studied by rheometer. The results showed that when the number of carbon atoms in long chain alkyl of betaine was different, the hydrophilicity and lipophilicity of molecules were also different. When the number of long-chain alkyl carbon atoms of A series betaine was 14, and that of B series betaine was 16, the hydrophilicity and lipophilicity of betaine molecules reached equilibrium. Compared with other betaine molecules in the same series, betaine molecules were more easily adsorbed at the oil-water interface, and were not easy to desorb after adsorption, resulting in the highest interfacial film strength. There was an optimal mass fraction of betaine solution, and when the mass fraction was reached, the betaine molecules adsorbed to the oil-water interface to form the most solid interfacial film. Compared with A series, B series betaine had hydroxyl group introduced into the molecular group. Due to the interaction between hydroxyl groups, the interfacial molecules had stronger interfacial arrangement, and the interfacial film had better anti-disturbance ability.

关 键 词：甜菜碱 油水界面 流变性 界面黏度 

分 类 号：TE39[石油与天然气工程—油气田开发工程]