Stable foams and methods of use

Details Stable foams and methods of use Stable foams and methods of use

C - Chemistry, Metallurgy

08

L

31/14

C08L 5/00 (2006.01) C08J 9/12 (2006.01) C09K 8/70 (2006.01) E21B 43/26 (2006.01) C12P 19/04 (2006.01)

Patent

CA 1185778

-29- ABSTRACT OF THE DISCLOSURE Enhanced foams are described which comprise: an aqueous medium, a surfactant, a gas, a heteropoly- saccharide, and a water soluble inorganic salt. For example, a foam fracturing fluid was prepared by foaming an aqueous solution of a xanthan gum, KCl and a commercial blend of surfactants with nitrogen. This foamed fracturing fluid had excellent proppant carrying capacity, low fluid loss, and excellent stability even at elevated temperatures. -29-

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