FIELD: mining.
SUBSTANCE: fluid for treatment of wells contains a water-based liquid, a crosslinking agent and a gel-forming agent, containing a crosslinked polymer and a non-crosslinked biopolymer, where a molecule of the latter consists only of glucose or has the main chain, comprising a glucose link and a linear or cyclic monosaccharide link of the specified type, and ratio of a biopolymer to a crosslinked polymer makes 0.05-1:1. The method for treatment of a part of an underground bed includes provision of the above-specified liquid and its injection into a well shaft that penetrates into an underground bed. The above-specified method, where the liquid for treatment comprises a crosslinked polymer and diutan with diutan ratio to crosslinked polymer equal to 0.05-1:1.
EFFECT: improved rheological properties and temperature stability of gel-forming agents.
21 cl, 3 ex, 3 tbl, 4 dwg
