Безопасност ь методаExplosions of torpedoes designed for dilatance decompaction of reservoir formations do not cause the damage of integrity and hermeticity of the well boring casing, as their single charges do not exceed 5 kg.

However, if the borehole structure has initial defects, cracks or caverns detected by acoustic probing, in order to prevent their development into dangerous state, special protection devices should be used.

Some of the most widespread samples of protection devices used in the process of oil and gas well torpedoing are illustrated in the figure below. Their design allows significantly (by 5…50 times) reducing the intensity of the shockwave effect on the boring casing or the hydraulic flow of the borehole fluid.