FIELD: chemistry.
SUBSTANCE: in the present invention, a surfactant composition is provided for the use in the treatment and recovery of liquid fossil fuels from a subterranean formation. A surfactant composition for treating a carrier, a liquid fossil fuel of a subterranean formation containing a primary surfactant - SAA, an agent giving the composition stability selected from the group consisting of auxiliary molecules, dialkyl sulfosuccinate, a solvent, and a mixture thereof, and also water for injection, the primary surfactant comprising a substance represented by the above formula, a substance represented by another reduced formula, and an auxiliary molecule substance is characterized by the formula given for it. The method for producing the above composition that comprises mixing the primary surfactant with the said agent. The method for recovering liquid fossil fuels from a subterranean bearing formation thereof, consisting of injecting the above composition along one or more injection wells, such that oil emerges from one or more production wells. The invention is developed in subclaims.
EFFECT: increasing the efficiency of oil recovery.
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