COMPOUND FOR ISOLATION OF BRINE WATER INFLOW Russian patent published in 1998 - IPC

FIELD: oil production industry. SUBSTANCE: compound for isolation of brine water inflow has following components: silicate of alkali metal, 2-20 mass%; salt of alkali-earth metal, 0.05-2 mas.%; suspension of sediment of product from interaction of alkali-earth metal salt and 1-30% of total amount of compound of alkali metal silicate, the balance. Used as salt of alkali-earth metal is for example calcium chloride or magnesium chloride. Application of compound allows for creating strong isolating system resistant to washing-out by water in water-saturated intervals of oil bed. EFFECT: higher efficiency. 1 cl, 1 tbl