ACID COMPOSITION FOR TREATMENT OF TERRIGENOUS RESERVOIR BOTTOMHOLE FORMATION ZONE WITH HIGH CARBONATENESS

摘要

FIELD: oil and gas industry.;SUBSTANCE: composition includes 36% hydrochloric acid, corrosion inhibitor CI-118, 86.5% fresh water, formylic acid, disodium edetate of ethylene diaminetetra-acetic acid, ammonium bifluoride, sodium erythorbate, oil wetting agent GF 15MPS.;EFFECT: obtaining the acid composition, having high solubility of the productive formation carbonate component, lowered surface tension on the border of kerosene-acid composition, low rate of corrosion and non-generating the insoluble precipitates at high reservoir temperatures.;3 tbl, 4 ex