FIELD: mining.
SUBSTANCE: methods for improvement of water-based liquid extraction from underground formation include application of hydrophobic coating onto multiple particles with the help of agent to produce hydrophobic coating, which includes at least one agent for production of hydrophobic coating, selected from the group, which includes the following: silane compound polymer, including fluorine-alkyl group, lecithin and their mixtures, and using particles with hydrophobic coating in underground formation to improve liquid extraction from it for water-based treatment.
EFFECT: increased efficiency of extraction.
17 cl, 1 tbl
