METHOD FOR ISOLATION OF PERMEABLE BED Russian patent published in 1999 - IPC

FIELD: oil production industry. SUBSTANCE: according to method, injected into bed is suspension of compound of aluminium or its mixture with filler in water or in hydrocarbon solvent and solution of alkali agent. For this purpose, used in function of aluminium compound is at least one component from following group: metal aluminium, aluminium oxide, aluminium hydroxide. Used in function of alkali agent is one of following materials: sodium hydroxide, sodium carbonate, sodium silicate, sodium siliconate, their mixtures or compounds based on them. Used in function of filler is clay, chalk, calcium sulfate, wood flour or technical carbon. Application of aforesaid method allows for achieving maximal isolation of highly permeable intervals due to creation of three-dimensional structurized sediments possessing high adhesion with respect to rock matter and stability in oil bed conditions. EFFECT: higher efficiency. 2 cl