SURFACTANT BASED VISCOELASTIC FLUIDS AND METHODS OF USING THE SAMESURFACTANT BASED VISCOELASTIC FLUIDS AND METHODS OF USING THE SAME

摘要

Surfactant based viscoelastic fluids for enhancing the productivity of a hydrocarbonbearing formations have particular applicability in acid fracturing of subterranean formations surrounding oil and gas wells. The viscoelastic fluid contains an organic acid, an inorganic monovalent salt and a quaternary ammonium aromatic salt and water. The fluid may further be foamed or energized.