The present disclosure is directed to polyanionic surfactants, surfactant mixtures, compositions derived thereof, and uses thereof in hydrocarbon recovery. Methods of making polyanionic surfactants are also described.

The present disclosure is directed to polyanionic surfactants, surfactant mixtures, compositions derived thereof, and uses thereof in hydrocarbon recovery. Methods of making polyanionic surfactants are also described.

The present disclosure is directed to polyanionic surfactants, surfactant mixtures, compositions derived thereof, and uses thereof in hydrocarbon recovery. Methods of making polyanionic surfactants are also described.

The present disclosure is directed to polyanionic surfactants, surfactant mixtures, compositions derived thereof, and uses thereof in hydrocarbon recovery. Methods of making polyanionic surfactants are also described.

The present disclosure is directed to polyanionic surfactants, surfactant mixtures, compositions derived thereof, and uses thereof in hydrocarbon recovery. Methods of making polyanionic surfactants are also described.

The present disclosure is directed to polyanionic surfactants, surfactant mixtures, compositions derived thereof, and uses thereof in hydrocarbon recovery. Methods of making polyanionic surfactants are also described.

The present disclosure provides methods of treating industrial processes with compositions, methods of manufacturing the compositions, and various anti-freezing compositions suitable for use in the industrial processes. The anti-freezing dispersant compositions may include, for example, sulfonated dispersants and winterization solvents. The anti-freezing dispersant compositions may prevent fouling in the industrial processes.

The present disclosure provides methods of treating industrial processes with compositions, methods of manufacturing the compositions, and various anti-freezing compositions suitable for use in the industrial processes. The anti-freezing dispersant compositions may include, for example, sulfonated dispersants and winterization solvents. The anti-freezing dispersant compositions may prevent fouling in the industrial processes.

A surfactant composition including a C.sub.10 AOS and/or C.sub.12 AOS, and an effective amount of at least one solubilizing component so as to increase brine tolerance of the composition is disclosed. The solubilizing component comprises a mixture of

##STR00001## where X is H, an alkali metal, alkaline earth metal or ammonium, and R is a linear C.sub.6-C.sub.16 alkyl group. A method of recovering hydrocarbons from a reservoir during gas injection into said reservoir is also disclosed which involves at least periodically injecting the gas and a foam-forming surfactant composition into the reservoir so as to assist in the recovery of hydrocarbons from the reservoir.

A surfactant composition including a C.sub.10 AOS and/or C.sub.12 AOS, and an effective amount of at least one solubilizing component so as to increase brine tolerance of the composition is disclosed. The solubilizing component comprises a mixture of

##STR00001## where X is H, an alkali metal, alkaline earth metal or ammonium, and R is a linear C.sub.6-C.sub.16 alkyl group. A method of recovering hydrocarbons from a reservoir during gas injection into said reservoir is also disclosed which involves at least periodically injecting the gas and a foam-forming surfactant composition into the reservoir so as to assist in the recovery of hydrocarbons from the reservoir.