Research progress of aliphatic alcohol polyoxyethylene ethers sulfonates as oil displacement agents
The routes,process characteristics,advantages and disadvantages of the halogenated aliphatic alcohol ether process,olefin addition,sulfates transformation and sodium isethionate process for the synthesis of aliphatic alcohol polyoxyethylene ethers sulfonates are introduced. The research status about the influencing factors of the foaming property,and the performance of temperature-resistant,salt-tolerance and calcium-tolerance are analyzed. This kind of aliphatic alcohol polyoxyethylene ethers sulfonates anionicnonionic ampholytic surfactant has various excellent properties of conventional surfactants,especially suits for the extraction of oil flooding in the conditions of higher temperature and higher salinity,and it shows broad space for development in oil field exploitation.