| 摘要 |
FIELD: oil producing industry. SUBSTANCE: method of equalization of infectivity profile of injection wells includes successive injection into formation of two compounds of different consistences. Precipitating agent is injected in form of sodium (potassium) silicate, calcium chloride, sodium chloride and water, and gel-forming compound is injected in form of sodium (potassium) silicate, calcium chloride and water. EFFECT: higher oil recovery from formation, reduced water cutting of oil due to isolation of fractured washed zones and pivotally permeable formations and increased filtration resistance of intervals with medium permeability. 3 cl, 3 tbl |
