| abstract |
FIELD: chemistry. n SUBSTANCE: liquid, suitable for carbonate formations treatment contains glutamic N,N-diacetic acid or salt thereof (GLDA), a corrosion inhibitor and a cationic surfactant. The said liquid is acidic. GLDA quantity is between 5 and 30 wt % based on the total weight of the fluid. The corrosion inhibitor is present in an amount of 0.1-2 vol. % of the liquid volume. The cationic surfactant is present in an amount of 0.1-2 vol. % of the liquid volume. n EFFECT: efficient carbonate formations treatment due to prolonged activity of treating liquids and their effect at the formation depth, reduced required amount of additives in treating liquids. n 16 cl, 5 dwg, 2 tbl, 7 ex |