| 摘要 |
FIELD: oil and gas industry. ^ SUBSTANCE: method for extraction of oil from carbonate formations involves dilution in water or salt solution (in quantity of 0.01-20%) of quarternary polyamines of the specified formula, where nëÑ1; R1 represents H, CH3, CH2CH3, CnH2n+1; R2 represents H2CHOHCH2, CH2, CH2CH=CH2, R3 represents CH3, CH2CH3, CnH2n+1; R4 represents CH2, CH2CH=CH3; and if R2 and R4 represent allyl groups, then altogether they can form aliphatic cyclic structures; ratio between atoms of carbon and nitrogen (C/N) is at the interval of 2 to 30, and further introduction to the well. ^ EFFECT: increasing oil extraction degree. ^ 15 cl, 30 ex, 4 tbl, 5 dwg |
