METHOD OF HYDRAULIC FRACTURING AND SUPPORTING OF LAYERS Russian patent published in 2014 - IPC E21B43/26 

FIELD: mining.

SUBSTANCE: invention relates to the mining industry and can be used to increase production output and ensure the stable operation of the development wells by the method of hydraulic fracturing of the layer (HFL) and supporting the reservoir formations. The invention relates to mining industry and can be used to increase production output and ensure the stable operation of the development wells by the method of hydraulic fracturing of the layer and supporting the reservoir formations. In the method of hydraulic fracturing and supporting the layers the fracturing fluid is prepared, comprising an aqueous solution of intermediate modulus liquid glass of the composition, wt %: sodium silicate - 17-20, water - 80-83, and acetone-alcoholic solution consisting of anhydrous acetone and methyl alcohol in volume ratio of 0.4:1 with the ratio of components, wt %: the said solution of liquid glass - 75-85 and the said acetone-alcohol solution - 15-25, its pumping into the layer is carried out in 30-40 minutes after preparing. Upon reaching hydraulic fracturing of the layer for supporting the reservoir formations, the proppant is added to the fracturing fluid in an amount of 100-150 kg per 1 m³ of liquid and pumping of fixative solution of aqueous-alcoholic solution of chlorides of alkaline earth metal is carried out of composition, wt %; calcium chloride - 14.0-17.0; magnesium chloride - 1.5-2.5; methyl alcohol - 23.0-47.0; the rest - water.

EFFECT: providing performance and stable operation of the wells after HFL due to effective supporting the loose, uncemented reservoir formations in the bottom hole zone of productive horizon.

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