METHODS OF MAKING AND USING SULFONATED OR CARBOXYLATED POLYSACCHARIDE GELLING AGENTS

摘要

One embodiment of the present invention provides a method of treating a subterranean formation comprising: providing a treatment fluid comprising a sulfonated polysaccharide gelling agent wherein the sulfonated polysaccharide gelling agent is produced by reacting a cyclic sultone with a polysaccharide; and, introducing the treatment fluid into a portion of a subterranean formation. Another embodiment provides a method of treating a subterranean formation, comprising: providing a treatment fluid comprising a carboxylated polysaccharide gelling agent wherein the carboxylated polysaccharide gelling agent is produced by reacting a polysaccharide with at least one of the following: a cyclic lactone or a cyclic phosphonate acid; and introducing the treatment fluid into a portion of a subterranean formation. Another embodiment provides a method of derivatizing a polysaccharide comprising reacting a polysaccharide with at least one of the following: a cyclic sultone, a cyclic lactone, or a cyclic phosphonate acid.