Patent ID: 7569522

Claim:
A method of fracturing a subterranean formation at a temperature of at least 93° C. with a stable foamed fluid comprising an aqueous medium; a carbon dioxide gas component incorporated in an amount from about 40% to about 70% of total fluid volume percent; a diutan heteropolysaccharide incorporated in an amount from about 0.10% to about 0.40% by weight of total liquid phase weight; an amine functional surfactant selected from the group consisting of zwitterionic, amphoteric, cationic and any combination thereof, incorporated in an amount of from about 0.05 wt% to about 2 wt% of total liquid phase weight; potassium chloride incorporated in an amount of from about 1.0 wt% to about 8.0 wt% of the total liquid phase weight; and an organoamino compound selected from the group consisting of tetraethylenepentamine, triethylenetetramine, pentaethylenhexamine, triethanolamine, and any mixtures thereof, incorporated in an amount from about 0.05 wt% to about 1.0 wt% based on total liquid phase weight; comprising injecting the stable foamed fluid into a wellbore penetrating the subterranean formation at a pressure sufficient to fracture the formation.