Akzo Nobel N.v.

Foad Mozayeni

Michael D Hoey

Ralph Franklin

James F Gadberry

Glenda Del Carmen Vale

Viscoelastic surfactant based aqueous fluid systems are described that are useful in fracturing subterranean formations penetrated by a wellbore. The preferred surfactant compositions contain quaternary ammonium salts wherein the long chain alkyl substituent contains about 3% or less of groups containing 18 or less carbon atoms. The amount of intermediate compounds in the surfactant composition is less than about 1%. The surfactant composition can be used in conjunction with an inorganic water soluble salt such as ammonium chloride or potassium chloride, and an organic stabilizing additive.

Growing community of inventors

Bethel, CT, United States of America

Foad Mozayeni