The Application of High Temperature Foam Surface Active Agent Used in Heavy Oil Thermal Recovery

Heavy oil in Liaohe oilfield is buried in more than 1000 meters, and the steam injection temperature is around 350°C. Through the experiment on surfactant product, high temperature foam surface active agent was developed, which was based on high carbon chain alkyl benzene sulfonate or alkyl toluene sulfonate, and auxiliary solvent and stabilizer were added. High temperature foam surface active agent can meet the needs of steam foam profile control technology.