WATERPROOFING COMPOUND Russian patent published in 2000 - IPC

FIELD: oil and gas production industry. SUBSTANCE: this compound can be used for selective isolation of water inflows to wells even in conditions of low-permeable reservoirs. Waterproofing compound for selective isolation contains following components and in this proportion: 100 mas.part of ethyl ether of ortho-silicic acid, 10-200 mas.part of polar solvent, 1-10 mas.part of chlorides of metals preferably of tin, titanium or iron used in function of catalyzer. Application of composition of waterproofing compound ensures adjustable viscosity and period of gel-formation. It can be used within wide range of temperatures both in high-permeable and low-permeable reservoirs. In addition, it can be stored for long period of time and can be produced in factory conditions. EFFECT: higher efficiency. 1 tbl