FIELD: oil production. SUBSTANCE: surface-active substance is pumped in hydrocarbon liquid strata. Mixture of ethoxy alkylphenol with extent of ethoxy equal to 6 and 12, APh9-6,, APh9-12 with ratio of weights from 1:5 to 5: 1 is used as surface-active substance. Aromatic dissolver is added to the surface-active substance and hydrocarbon liquid with ration 1:1 to 5:1. Total concentration of the surface-active substance is 1.0 - 5.0 per cent by weight. EFFECT: higher productivity. 1 tbl
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Authors
Dates
1996-11-10—Published
1990-11-06—Filed