摘要
利用悬挂滴方法研究了油藏条件对非均相驱油体系的界面扩张流变性质影响。非均相驱油体系中包含表面活性剂、聚合物以及BPPG,考察了时间、工作频率、浓度以及界面压对界面扩张流变性质的影响。结果表明,界面张力随矿化度增大降低;不同矿化度的非均相驱油体系,其扩张弹性随工作频率升高,但频率依赖性较弱,扩张粘性的频率依赖性较强。矿化度的增大可促进体相与界面的扩散交换作用。二价阳离子与碱可有效降低界面张力,其中碱的作用效果更加明显;同时两者在低浓度时均有促进界面膜的紧密排列,高浓度时促进扩散交换作用。
The influence of reservoir conditions on the interfacial dilational rheological properties of heterogeneous flooding system was studied with an oscillating pendant drop method.The heterogeneous flooding system includes surfactant,polymer and BPPG.The effects of time,working frequency,concentration and interfacial pressure on interfacial dilational rheological properties were investigated.According to the above studies,the interfacial tension decreases with the increase of salinity.The dilational elasticity of the heterogeneous flooding system with different salinity increases with the working frequency,but the frequency dependence is weak,and the frequency dependence of the dilational viscosity is strong.The increase of salinity can promote the diffusion exchange between the bulk phase and the interface.The divalent cation and alkali can effectively reduce the interfacial tension,and the effect of alkali is more obvious.At the same time,both of them promote the compact arrangement of interfacial membrane at low concentration and diffusion exchange at high concentration.
作者
邓朝阳
祝仰文
朱焱
张路
张磊
DENG Zhao-yang;ZHU Yang-wen;ZHU Yan;ZHANG Lu;ZHANG Lei(School of Chemistry,Chemical Engineering and Life Sciences,Wuhan University of Technology,Wuhan 430070,China;Exploration&Development Research Institute of Shengli Oilfield Co Ltd,SINOPEC,Dongying 257015,China;Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China)
出处
《武汉理工大学学报》
CAS
北大核心
2020年第4期40-45,共6页
Journal of Wuhan University of Technology
基金
国家重点研发计划(2019YFA0708700)
国家自然科学基金(21703269)。
关键词
界面流变
油藏条件
扩张模量
扩散交换
粘弹性
interfacial rheological
reservoir conditions
dilational modulus
diffusion exchange
viscoelastic
