OIL FORMATION CRITICAL AREA TREATMENT REAGENT AND A METHOD FOR USING THE SAME

摘要

FIELD: oil and gas production.;SUBSTANCE: invention relates to reagents treating oil formation critical zone to increase productivity of wells and can be employed within a wide formation temperature range (20 to 90°С) at summary content of salts in formation and injected waters between 0.034 and 24.0 wt %, on carbonate, terrigenous, and mudded rocks. Reagent according to invention is aqueous solution of resins formed after concentration of high-acidity caprolactam production effluent containing at least 31% solids, at least 6.4% aminoorganic acids (calculated as amino caproic acid, and having pH above 4.4. Treatment of critical area of formation is accomplished by injecting above reagent with aqueous solution of electrolytes and/or organic solvent, and/or hydrocarbon surfactant dispersion.;EFFECT: increased assortment of formation treatment reagents and widened treatment efficiency range.;2 cl, 5 tbl, 4 ex