Enhanced foam flooding and high salinity reservoir composition and a preparation method

The present invention relates to a high salt reservoir for flooding the foam composition and method for preparing reinforced, mainly to solve the conventional and high salinity reservoir EOR foam during foaming agent present in the case of high salinity precipitate formed foam stability difference , the problem of insufficient sealing performance. The present invention uses a foam composition comprising a long-chain betaines, [alpha] -olefin sulfonate, mineral water and gas, a long-chain betaines, [alpha] olefin sulfonate was dissolved in a mixed gas with mineralized water to form a foam, wherein long chain betaine sulfonate type, molecular formula: technical solution solves this problem, and high salinity reservoir for enhanced foam flooding process.