FIELD: oil industry.
SUBSTANCE: method includes feeding reversed oil emulsion into bed and also water solution of acid, as reversed emulsion, emulsion is used, containing following components, in percents of total: hydrocarbon liquid 26-40, oil-soluble nitrogen-containing emulsifier Sonkor-9601 or Sonkor-9701 0.4-5, water solution of inhibited 10% hydrochloric acid or argillaceous acid or water solution 1-10% of chlorine calcium or chlorine sodium the rest. As hydrocarbon liquid diesel fuel is used or liquid oil hydrocarbons of paraffin row, or unstable gas benzene, or light oil. Reversed emulsion maintains stability during 6-35 hours at temperature from 60 to 100°C during filtering through bed model with penetrability more than or equal to 0.2 mcm2. Time of feeding of reversed emulsion with filtering into bed should not exceed emulsion stability preservation time.
EFFECT: higher efficiency.
4 cl, 3 tbl
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