Recent advances in switchable surfactants for heavy oil production:A review  

作　　者：Qi Li Lingfei Liu Dejun Sun Zhenghe Xu 

机构地区：[1]Key Laboratory of Colloid and Interface Chemistry,Ministry of Education,School of Chemistry and Chemical Engineering,Shandong University,Jinan,Shandong,250100,PR China [2]Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials,Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,PR China [3]Key Laboratory of Tertiary Oil Recovery and Oilfield Chemistry,PetroChina Dagang Oilfield Company,Tianjin,300280,PR China

出　　处：《Energy Geoscience》2024年第4期75-88,共14页能源地球科学（英文）

基　　金：supported by a key project of the National Natural Science Foundation of China(No 21938003);the Postdoctoral Foundation of the PetroChina Dagang Oilfield Company(No.2023BO59).

摘　　要：Surfactants are extensively employed in the cold production of heavy oil.However,producing heavy oil emulsions using conventional surfactants poses a challenge to spontaneous demulsification,necessitating the addition of demulsifiers for oil-water separation.This inevitably increases the exploitation cost and environmental pollution risk.Switchable surfactants have garnered much attention due to their dual capabilities of underground heavy oil emulsification and surface demulsification.This study focuses on the fundamental working principles and classification of novel switchable surfactants for oil displacement developed in recent years.It offers a comprehensive overview of the latest advances in the applications of switchable surfactants in the fields of enhanced oil recovery(EOR),oil sand washing,and oil-water separation.Furthermore,it highlights the existing challenges and future development directions of switchable surfactants for heavy oil recovery.

关 键 词：Heavy oil Switchable surfactant Cold production EMULSIFICATION DEMULSIFICATION 

分 类 号：TE345[石油与天然气工程—油气田开发工程] TQ423[化学工程]