METHOD FOR CONTROL OF FILTERING PROPERTY OF COLLECTING ROCK Russian patent published in 1995 - IPC

FIELD: mining industry. SUBSTANCE: method involves preliminary assessment of formation rock porosity and saturation. Wells are drilled down to a desired point of blast where an explosive charge is placed. Artificial saturation of the formation is done depending on the assessed values of its porosity and saturation. In creating a low permeability zone round the well, fluid is displaced from the blast site to an appropriate distance. As may be required, the reliability of attaining a desired change in the post-explosion permeability as dependent on the process needs is enhanced by artificial saturation of the formation area with gas or fluid prior to blowing up. EFFECT: higher efficiency. 4 cl, 1 dwg, 1 tbl