Research status of surfactants used for CO₂ foaming in oilfield

The development process of CO₂ foam used in oil field was introduced. The properties of the surfactants used as foaming agent were explained. The development situation of surfactants used in CO₂ foam at home and abroad were mainly introduced. All kinds of water soluble surfactants used in CO₂ foam of the field were analyzed. The research status of the CO₂ soluble surfactants used in CO₂ foam was simply introduced. The application of CO₂ foam in the field was summarized.