SILICATE-CONTAINING OIL RECOVERY COMPOSITIONS

摘要

There is provided herein a process and composition for the enhanced recovery of oil from subterranean formations comprising injecting in combination with steam a composition comprising (a) an anionic surfactant (b) a hydrotrope, and (c) an alkali metal silicate. In a further embodiment, the anionic surfactant and alkali metal silicate alone may be used in 8 steam recovery process as an effective oil recovery method.