FIELD: chemistry.
SUBSTANCE: invention relates to water-based gelling liquids for processing underground formations. Composition for reducing time of linking of water solutions of linked organic polymer includes said polymer, mixed with aqueous basic liquid, borate linking agent, which has solubility in water at 22°C (71.6°F) in the range from 0.01 kg/m3 to 10 kg/m3, and composition of linking modifier in amount, reducing time of linking, which increases rate, at which linking agent provides gelling of linked organic polymer, where composition of modifier contains 90-98% vol. of the first and 2-10% vol. of the second modifiers of linking. Method of underground formation processing includes obtaining liquid for processing, which includes mixing aqueous basic liquid and linked thickening organic polymer, soluble in aqueous basic liquid, hydration of liquid for processing, obtaining borate-based linking composition, which contains borate linking agent, which has solubility, mentioned above; obtaining solution of modifier of linking, which contains 90-98% vol. of the first and 2-10% vol. of the second modifiers of linking; mixing linking composition and solution of modifier of linking; addition of obtained mixed composition to hydrated liquid and delivery of liquid for processing into underground formation. Invention is developed in dependent claims.
EFFECT: increased efficiency of control of linking in case of changing pH and in wide interval of temperatures in formation.
21 cl, 10 ex, 13 tbl
