弱碱三元体系乳化及界面张力性能影响因素研究  

Study on the Influencing Factors of Emulsification and Interfacial Tension Properties in Weak Base ASP System

作　　者：王超群 Wang Chaoqun(Research Institution of Oilfield Chemistry,China Oilfield Services Limited,Langfang 065201,China)

机构地区：[1]中海油服油田化学研究院,河北廊坊065201

出　　处：《广东化工》2023年第17期49-52,共4页Guangdong Chemical Industry

摘　　要：本文以弱碱三元体系为研究对象,主要考察了矿化度、温度以及pH值变化对弱碱三元体系界面张力及乳化性能的影响。从水解反应热力学及动力学观点出发,推导了矿化度对体系pH值影响的理论计算过程,分析了导致弱碱三元体系pH值变化的影响因素。得到结果如下:随着矿化度的增加,体系界面张力值出现先下降后上升的趋势;体系乳化析水率呈现先下降后上升的现象,当体系的总矿化度超过20000 mg/L时,表面活性剂会出现盐析现象;80℃以内,弱碱三元体系界面张力随着温度的升高呈现逐渐下降趋势,而随着温度升高乳状液的稳定性不断下降;弱碱三元体系的pH值随着水中的总离子强度的增加而降低。The influence of emulsification and interface tension on ternary salinity,temperature and pH value of ASP system with weak base was investigated.In addition,the theoretical calculation of solution pH value at different temperatures was discussed in this article from the viewpoint of thermodynamics and kinetics of hydrolysis reaction.the results were as follows:along with the increase of the degree of mineralization,the tension value of the system decreases firstly and then increases.The phenomenon of rising after the first fall interms to the rate of water emulsion.When the total salinity of the system exceeds 20000 mg/L,the surfactant will salting out.The interfacial tension of the system decreases with the increase of temperature,and the stability of the emulsion decreases below 80℃.The pH value of the weak base ASP system decreases with the increase of the mineralization degree.

关 键 词：弱碱三元 界面张力 PH值 矿化度 乳化 

分 类 号：TE254[石油与天然气工程—油气井工程]