ANIONIC POLYMER COMPOSITION AND ITS USE FOR STIMULATING A SUBTERRANEAN FORMATION

摘要

Water soluble compositions comprise certain anionic polymers and, to improve the dispersibility thereof in polar liquids such as water, a cationic or amphoteric polyrner of defined compositions. A halide salt is also included if the amount of cationic or anionic polymer is 25% or more of the weight of the anionic polymer. These compositions are especially useful for thickening liquids to be used to treat (eg. acidise or fracture) subterranean formations.