The problem of stimulating geothermal reservoirs has received attention in recent years. Detonating explosives in a borehole is one technique for stimulating them. Explosives may also have an application where precipitation of solids near the producing well has significantly reduced the permeability around it. However, the enhancement of the permeability around the borehole has itself not been well-defined, and hence, the effects of explosive stimulation are difficult to predict. Below, we outline a theory which has correlated well with existing measurements of permeability enhancement. A more complete development can be found in Ref. 1.

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