FIELD: oil, gas and coke-chemical industries.
SUBSTANCE: invention relates to cross-linking compositions used in hydraulic fracturing of a subterranean formation to increase oil recovery. Described are cross-linking compositions for aqueous solutions of polymers with hydroxyl functional groups. Said compositions contain at least one borate compound, from about 0.05 wt. % to 10 wt. % synthetic layered silicate and a water source.
EFFECT: said compositions are characterized by storage stability, wherein moderately soluble borate does not undergo sedimentation.
15 cl, 5 dwg, 3 tbl, 9 ex
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