Increase of efficiency of explosive action in oil-bearing rocks

The efficiency factor of explosive energy increases due to increasing volume of gas products of explosive decomposition of a transitive layer of nitrate salts formed directly in alkaline and alkaline-earth rocks adjacent to the walls of a charge cavity as a result of their treatment with nitric acid. In oil-bearing rocks within the volume of the nitric acid penetration zone there is formed a low brisant explosive, increasing the total weight of the charge.