Device for a down-hole seismic source, a system comprising the device, and a method for using the device and the system

A device adapted for a down-hole seismic source, the down hole being obtained in the subsoil and containing water, the device being adapted for introductio into the down-hole and immersion in water. The device allows to generate and transmit to the sorrounding rocks a good amount of elastic energy, thanks to a cartridge percussion system inserted into a sealed part of the device body: the explosion of the cartridge, which is of the blank-loaded type, causes water to be expelled laterally through external apertures.