Question 2799 Deck General

The correct answer is B) no deeper than the shoe of the last casing set. When hanging off the drill pipe in an emergency situation aboard a Mobile Offshore Drilling Unit (MODU), the preferred location of the drill bit is no deeper than the shoe of the last casing set. This is because the casing shoe provides a more stable foundation and reduces the risk of the drill pipe becoming stuck in the wellbore, which could compromise the integrity of the well and potentially lead to a more serious situation. The other options are incorrect because: A) having the drill bit as close to the surface as possible may not provide enough control or stability; C) having the drill string in tension on bottom could increase the risk of the pipe becoming stuck; and D) having the drill bit one stand off bottom may not be as stable as the casing shoe.