FIELD: oil and gas industry.
SUBSTANCE: invention relates to the petroleum industry. Composition for acid treatment of bottomhole formation zone includes, wt%: inhibited hydrochloric acid 5.0-65.0; polymer xanthan 0.05-0.5; surfactant - oxyethylated alkyl phenol 0.05-1.0; stabiliser of iron-ammonium acetate 1.0-6.0; sulfamic acid 1.0-10.0; water - balance.
EFFECT: high efficiency of action on formation by considerable reduction of rate of reaction of acid composition with rock bed, increased treatment coverage, increasing current oil recovery, preventing contamination of bottomhole formation zone.
1 cl, 1 tbl, 2 ex
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