日用化学工业（中英文）2023，Vol.53Issue(8)：857-864,8.DOI:10.3969/j.issn.2097-2806.2023.08.001
致密油藏表面活性剂渗吸影响因素研究
Research on the influence factors of surfactant imbibition in tight reservoirs
摘要
Abstract
Tight reservoirs always show poor physical properties,resulting in difficulties to be effectively exploited by conventional water flooding.Imbibition with surfactant solutions is the main means for exploitation of tight reservoirs.In this work,the effects of rock wettability,surfactant types,interfacial tension(IFT)of imbibition solutions,oil viscosities,temperature and surfactant slug combinations on imbibition efficiencies were studied with Changqing tight outcrop cores by Amott cells.The results showed that,the higher the wettability of the rock was,the higher the imbibition recovery would be obtained.The imbibition recovery of different types of surfactants was decreased in the sequence:anionic surfactants>nonionic surfactants>cationic surfactants.When the oil-water IFT of imbibition liquid was at the level of 10-1 mN/m,the imbibition efficiency was the highest.Reducing the viscosity of crude oil and increasing temperature were both beneficial to the imbibition recovery.The earlier the surfactant imbibition was carried out,the higher the imbibition efficiency was.In addition,the imbibition efficiency could be further improved by using ultra-low IFT imbibition solution after primary imbibition with non-ultra-low IFT imbibition solutions.关键词
致密油藏/表面活性剂/渗吸/界面张力/润湿性Key words
tight reservoir/surfactant/imbibition/interface tension/wettability分类
化学化工引用本文复制引用
徐德荣,连威,熊金钊,康万利..致密油藏表面活性剂渗吸影响因素研究[J].日用化学工业（中英文）,2023,53(8):857-864,8.基金项目
国家自然科学基金青年项目资助(52204062) （52204062）
克拉玛依市创新人才专项资助(20212022hjcxrc0037) （20212022hjcxrc0037）
中国石油大学(北京)克拉玛依校区科研启动基金资助(XQZX20230013) （北京）
