FIELD: oil and gas industry.
SUBSTANCE: composition for isolation of water influx to oil producers includes amides of fatty acids and fresh water. At that as amides of the fatty acids the composition contains 40-50 wt % of ethanolamides of fatty acids with 12-18 carbon atoms, among which there are additional 10-20 wt % of secondary atoms and 10-20 wt % of polyatomic alcohols.
EFFECT: improving efficiency of water shutoff treatment in producers due to use of homogenous composition with selective action towards water-saturated sites of terrigenous and carbonate reservoirs.
1 ex, 1 tbl, 4 dwg
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