Patent ID: 6701818
Filing Date: 2004-03-09
Classification: A62C,F42B,G01V

Abstract:
A method of seismic exploration of a remote land or marine site, said method including the steps of:providing a barrel assembly comprising a barrel having a plurality of projectiles arranged in-line within the barrel in sealing engagement with the barrel and which projectiles are associated with discrete selectively ignitable propellant charges for propelling the projectiles sequentially through the muzzle of the barrel, wherein said sealing engagement prevents rearward travel of an ignited propellant charge to a trailing propellant charge, which barrel assembly is capable of firing a plurality of seismic signal instigating projectiles; and firing said plurality of seismic signal instigating projectiles from said barrel assembly to the ground or water at a selected rate and/or directions to propagate a desired seismic signal.