The finite-element method (FEM) is employed to evaluate stress distribution around a perforation tunnel with a sandstone forma- tion. Experimental data are used to confirm the results of theoreti- cal study. In the model, the effect of jet pressure, jet temperature, and the combination of both on formation are studied separately. The results indicated that a 3.5-g RDX charge is capable of dis- Turbing rock formation up to 5 in. longitudinally and 2 in. radially. The extent of this damage zone for a 10.5-g RDX charge is 8 in.
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