FIELD: petroleum industry.
SUBSTANCE: method for increasing the petroleum recovery of layers with a temperature below 70°C includes injecting a composition containing aluminium oxychloride with a basicity of 79 to 84% into the petroleum layer, at the following ratio of components of the composition, wt.%: said aluminium oxychloride 3.5 to 17.6; carbamide 14.0 to 23.3; water the rest. The injected composition may additionally contain urotropin in an amount of 1 to 2 wt.%.
EFFECT: formation of a gel inside the layer with specified physical and chemical characteristics and time of gel formation.
2 cl, 3 dwg, 1 tbl, 6 ex
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