Patent ID: 6383990
Filing Date: 2002-05-07
Classification: C09K,Y10S

Abstract:
A method of fracturing a subterranean formation having a temperature of about 150Â° F. and above, comprising:blending together an aqueous fluid and a hydratable polymer to form a base fluid, wherein the hydratable polymer is a carboxylated guar present in an amount of about 0.24 weight percent or less of the aqueous fluid and wherein the aqueous fluid contains a tetramethylammonium halide; adding a crosslinking agent to the base fluid to form a gel; and injecting the gel into at least a portion of the subterranean formation at high pressure to form fractures within the formation wherein the gel can maintain a pumping time in excess of 6 hours at temperatures of about 150Â° F. and above.