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.

Compositions, such as surfactant and/or detergent compositions, that include branched sulfonated surfactants. Related methods.

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.

Compositions and methods for dispersing complex scale based on elemental sulfur are provided. A method for dispersing elemental sulfur in acidic water includes providing water including elemental sulfur and adding from about 1 to about 100 parts by weight of a sulfur dispersion additive to the water based on one million parts by weight of the water to disperse the elemental sulfur in the water. The sulfur dispersion additive is chosen from a water soluble aromatic surfactant, a lignosulfonate, a naphthalene sulfonate, and combinations thereof.

Compositions and methods for dispersing complex scale based on elemental sulfur are provided. A method for dispersing elemental sulfur in acidic water includes providing water including elemental sulfur and adding from about 1 to about 100 parts by weight of a sulfur dispersion additive to the water based on one million parts by weight of the water to disperse the elemental sulfur in the water. The sulfur dispersion additive is chosen from a water soluble aromatic surfactant, a lignosulfonate, a naphthalene sulfonate, and combinations thereof.

The disclosure provides compositions and methods for reducing fouling of a surface in contact with a medium during a natural gas processing procedure. Methods may include adding a composition to the medium, wherein the medium includes an inorganic particle, an organic particle, and/or an inorganic-organic particle, and the composition includes a surfactant. The surfactant may encapsulate the particle. The surfactant may include, for example, a phthalate ester, a naphthalate ester, a tall oil fatty acid, a soya oil fatty acid, sunflower oil fatty acid, canola oil fatty acid, coconut oil fatty acid, cyrene, a trigylceride, or any combination thereof.

The disclosure provides compositions and methods for reducing fouling of a surface in contact with a medium during a natural gas processing procedure. Methods may include adding a composition to the medium, wherein the medium includes an inorganic particle, an organic particle, and/or an inorganic-organic particle, and the composition includes a surfactant. The surfactant may encapsulate the particle. The surfactant may include, for example, a phthalate ester, a naphthalate ester, a tall oil fatty acid, a soya oil fatty acid, sunflower oil fatty acid, canola oil fatty acid, coconut oil fatty acid, cyrene, a trigylceride, or any combination thereof.

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.