| 摘要 |
FIELD: oil production from formation; applicable in intensification of high-temperature well operation, increase of actual oil recovery from formation. SUBSTANCE: composition for treatment of high-temperature (above 60 C) oil wells includes 12-% solution of hydrochloric acid and surfactant in amount of 0.8-1.2% of solution volume. Technical result of use of invention consists in higher efficiency of formation stimulation due to retardation of acid solution neutralization at temperatures above 60 C, ensuring more deep penetration into formation, reduced corrosive activity, excluded contamination of formation, increased formation productivity due to reduced interfacial tension on solution-formation medium, provision of fuller washing-out of acid solution filtrate from formation in well washing. EFFECT: higher efficiency of use. 1 tbl, 1 ex |
