论文部分内容阅读
在碱水驱提高原油采收率过程中,当碱水与酸性原油接触时,界面张力随时间的发展有-动态变化过程。本文工作以氢氧化钠水溶液与模拟酸性油相互作用,研究了碱水-酸性油之间的动态界面张力问题;系统地考查了影响动态界面张力的主要因素;研究了碱浓度,油相、水相粘度对动态界面张力的影响;提出了拟平衡设想以解释油-水之间动态界面张力的变化过程。对盐浓度、一价阳离子,二价阳离子等因素在动态界面张力变化过程中的作用进行了较深入的探讨,认为在高碱浓度时对动态界面张力的影响主要是离子强度的影响。
In alkaline water flooding to enhance the recovery rate of crude oil, when the contact of alkali water with acidic crude oil, the interfacial tension develops with time - dynamic process. In this work, the interaction between sodium hydroxide aqueous solution and simulated acid oil was used to study the dynamic interfacial tension between alkali and acid oil. The main factors influencing the dynamic interfacial tension were systematically investigated. The effects of alkali concentration, oil phase, water Phase viscosity on the dynamic interfacial tension. Proposed quasi-equilibrium assumption to explain the dynamic process of interfacial tension between oil and water. The effects of salt concentration, monovalent cations and divalent cations on dynamic interfacial tension were discussed in depth. The effect of high alkali concentration on dynamic interfacial tension was mainly influenced by ionic strength.