Cytec Industries Inc.

Azhar M Awan

David A Vanzin

Shailesh Majmudar

Eunyong Kim

Nimal Jayasuriya

Dongcheel Lee

Sulfosuccinate surfactant compounds blended in binary and ternary combinations to yield synergistic sulfosuccinate surfactant systems and use of the same in enhanced oil recovery and hydraulic fracturing applications.

Sulfosuccinate surfactant compositions and methods using the same

This invention relates to foam-forming surfactant compositions having at least two surfactants whereof at least one is a sulfosuccinamate, and at least one is a sulfosuccinate, and optionally including, a solvent. Methods of recovering oil or gas by generating a foam, feeding the foam into a subterranean oil- or gas-bearing geological formation, and collecting mineral oil or natural gas driven by the foam in a production well, wherein the foam is generated by intimate mixing of one or more foam-forming surfactant compositions described herein with a gas in a foam generator, or by introduction of at least one of water and gases, together or intermittently or in alternating sequence, slugs of a gas which may be in a supercritical or non-supercritical state, and of water, wherein the foam-forming surfactant composition(s) can be admixed to the water or to the gas if the gas is in a supercritical state or be introduced separately as solution into the geological formation, are also provided.

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Woodstock, GA, United States of America

Azhar M Awan