FIELD: oil and gas production.
SUBSTANCE: procedure for production of liquid for treatment of well in essence consists of thickening strong salt water by introduction of cation poly-saccharide. Composition of said above liquid has cation poly-saccharide density of charges approximately 1.6 mekv/g, molecular weight 100000-2000000 and is produced by interaction of guar gum with quaternary ammonia compound. The invention is developed in dependent points of formula.
EFFECT: raised efficiency of strong salt water thickening used for treatment of wells.
21 cl, 1 ex, 3 tbl
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