Patent ID: 7650947

Claim:
A well completion apparatus comprising: (a) a pipe string having a continuous fluid flow channel along a length thereof; (b) an earth boring bit secured to a distal end of said pipe string; (c) perforation means comprising gun means and a fluid flow mandrel secured at opposite distal ends between Y-adapter means at selected locations along said pipe string length for perforating a wellbore casing, said fluid flow mandrel for channeling fluid flow past said gun means toward said boring bit, each of said Y-adapter means having a threaded assembly with an adjacent pipe section and a threaded assembly with respective distal ends of said fluid flow mandrel, each of said Y-adapter means having collar means to encompass respective distal ends of said gun means and secure a substantially parallel axis alignment between said gun means and said flow mandrel, said gun means having a plurality of shaped charges distributed along a length thereof; (d) a pair of locking rings threaded upon respective ends of said gun means and turned against opposite faces of said collar means to secure a predetermined longitudinal position of said gun means between said collar means; and, (e) means for detonating said shaped charges by a predetermined detonation pressure.