A well completion method and apparatus comprises a pipe string having a bottom attached boring bit and scraper. Above the bit at designated well fluid production locations, perforation assemblies are integrated into the pipe string. Each perforation assembly comprises a by-pass circulation mandrel and a perforation gun. The circulation mandrel is secured at opposite distal ends in threaded Y-adapter boxes. The perforating gun is secured in collar bores respective to the opposite end Y-adapters.