Patent ID: 6167957
Filing Date: 2001-01-02
Classification: E21B

Abstract:
A perforating gun for use in supporting detonating explosives within a borehole for the purpose of exploiting petroleum and mineral deposits, the perforating gun comprising: a guiding element having a lower frustro conical extent and an upper collar; a rearward conveyancing element having an upper extent with a perforation formed therethrough and a lower collar; bow springs extending in between and interconnecting the collar of the guiding element and the collar of the conveyancing element, each of the springs including; a rearward end secured to the collar of the conveyancing element and a forward end secured to the collar of the guiding element, each of the bow springs defined by a width and a length, the width of each bow spring being twisted along its length, each of the bow springs having a plurality of threaded apertures formed through its thickness, each successive aperture being in alignment with the adjacent aperture; a plurality of explosive caps, each explosive cap having a threaded end portion in an upper coupling means, each of the explosive caps threadably secured within one of the threaded openings of the bow springs; detonating cords, each of the detonating cords positioned along an associated bow spring, each of the detonating cords secured to the upper coupling means of the plurality of explosive caps; a bow spring detonation cord having a distal end adapted to be interconnected with a detonation means and a proximate end which is adapted to be positioned through the slot of the conveyancing element, the proximate end of the bow spring detonating cord also being interconnected to the detonating cords associated with the bow springs.