复合体系特性及驱油效果研究  

A Study on Characteristics of the Composite System and Flooding Effects

作　　者：吴文祥[1] 刘万林[1] 张栋[1] 

机构地区：[1]东北石油大学石油工程学院,大庆163318

出　　处：《科学技术与工程》2013年第2期472-475,共4页Science Technology and Engineering

摘　　要：采用仪器分析和室内物理模拟实验方法,对比了BS(磺基甜菜碱表面活性剂)无碱二元体系、碳酸钠弱碱三元体系和强碱三元体系的界面张力、黏度、黏弹性及驱油效果。研究表明,二元体系的界面张力达到超低界面张力,且低于弱碱三元体系和强碱三元体系;由于没有碱的加入,二元体系的黏度和黏弹性均高于两种三元体系。通过人造非均质岩心物理模拟驱油实验可知,BS无碱二元体系的化学驱采收率比弱碱三元体系高2%(体积分数),比强碱三元体系高7.8%(体积分数)。The experimental methods of instrumental analysis and indoor physical simulation were used to com- pare the interracial tension, viscosity, viscoelasticity and flooding effects of BS （sulfonylurea betaine surfactant） bi- nary combinational system, Na2CO3 ASP flooding system and NaOH ASP flooding system. Studies have shown that the interracial tension of the binary combinational system could achieve ultra low interracial tension, and lower than the others flooding system. The viscosity and viscoelasticity of the binary combinational system were higher than the others systems without alkali. In heterogeneous core＇ s flooding experiments, an 2% and 7.8% recovery of BS bi- nary combinational system is higher than that of the weak base ASP flooding system and alkali flooding system.

关 键 词：界面张力 威森伯格数 黏弹性 二元复合体系 驱油效果 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]