西安石油大学学报（自然科学版）2011，Vol.26Issue(4)：38-42,5.
波及系数对稠油化学驱采收率的影响
摘要
Abstract
In order to study the influencing factors of chemical flooding,the chemical flooding systems of different formulas are obtained by measuring the IFT,emulsifying ability and oil film shrinking rate between the compound systems of alkali with surfactant and crude oil,and the oil displacement efficiency of these chemical flooding systems is evaluated by core flooding experiments. The results show that although the surfactant flooding systems can reach to ultra-low IFT,their recovery factors are lower,and although the IFT of alkali flooding systems is higher,they have higher recovery factor. The surfactant flooding systems can increase capillary number and displacement efficiency,but they cause the low oil saturation in the water flooding channels and serious oil displacement agent channeling, then cause lower sweep efficiency of oil displacement. The alkali flooding systems have not ultra-low IFT,but they have stronger emulsifying ability and lower oil film shrinking rate, then they have greater sweep efficiency and higher final recovery factor. Therefore, the sweep efficiency is more important than IFT to enhancing the recovery factor of heavy oil in chemical flooding.关键词
稠油油藏/化学驱/表面活性剂/界面张力/波及系数Key words
heavy oil reservoir/chemical flooding/surfactant/interfacial tension/sweep efficiency分类
能源科技引用本文复制引用
蒋平,张贵才,葛际江,丁保东,冯岸州,张建强..波及系数对稠油化学驱采收率的影响[J].西安石油大学学报（自然科学版）,2011,26(4):38-42,5.基金项目
国家高技术研究发展专项“与蒸汽吞吐结合的表面活性剂驱油体系研究”(2007AA062201) （2007AA062201）
新世纪优秀人才支持计划(NECT-07-0846) （NECT-07-0846）
山东省自然科学基金“稠油油藏蒸汽驱后提高采收率用表面活性剂研究”(Y2006F50) （Y2006F50）
霍英东基金 （）
中国石油大学引进人才科研基金 （）
