石油化工高等学校学报Issue(1)：66-70,5.DOI:10.3969/j.issn.1006-396X.2014.01.013
普通稠油SP二元复合驱波及系数与驱油效率的关系
The Relationship of Sweep Efficiency and Displacement Efficiency of SP Binary Combination Flooding Systems for Heavy Oil
摘要
Abstract
The binary combination flooding systems with the same viscosity and different interfacial tension were formulated by changing the concentration of betaine surfactants .The sandpack flooding tests were employed to evaluate the ability of flooding systems to enhance the heavy oil recovery .It is found that the recovery decreased with the increasing of the betaine concentration .Low concentration (0 .01% ) of betaine can reduce the IFT to a value above ultra-low value (10-3 mN/m) and the recovery of binary combination flooding system can be greatly improved .There exists a synergy effect between HPAM and surfactant .The microscopic flooding tests show that the improvement of sweep efficiency can increase heavy oil recovery more efficiently .The ultra-low value IFT leads to the increasing of displacement efficiency ,however the sweep efficiency was impaired .As a result ,the improvement of recovery was affected .关键词
普通稠油/化学驱/超低界面张力/波及系数/洗油效率Key words
Heavy oil/Chemical flooding/Ultra-low interfacial tension/Sweep efficiency/Displacement efficiency分类
能源科技引用本文复制引用
陈挺,张贵才,葛际江..普通稠油SP二元复合驱波及系数与驱油效率的关系[J].石油化工高等学校学报,2014,(1):66-70,5.基金项目
山东省自然科学基金资助项目“三次采油中化学驱体系油水界面流变性研究”（ZR2011EEQ001）。 （）
