Abstract: 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.

Abstract: A well completion method and apparatus comprises a pipe string having a bottom attached boring bit and scraper or reamer. 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 and perforation gun are both secured to respective arms of a Y-adapter. The Y-adapter leg receives the pin end of a traditional drill or production pipe. In one downhole trip, the wellbore casing may be scraped and the bottom-hole cement plug drilled out. Without removing the pipe string, the wellbore is flushed by a circulation of clean fluid down the pipe string bore, through the circulation mandrels and out the bit tooth cleaning jets into the wellbore annulus. Subsequently, the wellbore pressure is raised to detonate casing perforating shaped charges in the perforating gun.