FIELD: chemistry.
SUBSTANCE: present invention discloses coated particles for extracting oil, a proppant which contains the coated particles and a method for oil field development using said particles. The coated particles contain aggregate particles and an oil-permeable and water-impermeable film which coats the aggregate particles; the film is formed by at least two oleophilic and hydrophobic resins, an oil-permeable and water-impermeable epoxy resin, an oleophilic and hydrophobic phenol-aldehyde polymer, an oleophilic and hydrophobic polyurethane, with the weight ratio of the two types of oleophilic and hydrophobic resins of 1:0.1-10. The method for oil field development employs said particles. The invention is developed in subclaims.
EFFECT: high efficiency in reducing volume of produced water and high oil extraction.
10 cl, 15 ex, 2 dwg, 2 tbl
