COMPOUND FOR ISOLATION OF WATER-BEARING STRATA Russian patent published in 1998 - IPC

FIELD: oil and gas production industry. SUBSTANCE: this is used for isolation or limiting of water inflow to wells and absorption zones in both terrigenous and carbonate reservoirs , and levelling profile of injectivity in injection wells. Compound contains water-soluble polymer of acrylic line, sodium silicate, gel-formation regulator, filler and water. Used as filler: saw-dust and wood flour modified by polymers, for example waste in production of composite wooden polymeric materials. EFFECT: high efficiency. 5 tbl