METHOD OF AVOIDING THE NEED FOR A SCRAPER RUN IN DRILL OUT OPERATIONS AND A DOWNHOLE DRILLING MOTOR ASSEMBLY

摘要

A method of avoiding the need for a scraper run in drill out operations. The method involves the single step of incorporating a rotary scraper into the downhole drilling motor assembly in such a manner that the rotary scraper rotates with the drill bit and follows the drill bit to scrape debris from interior casing walls.