I'm not going to give the working title of what you did there either, James, but I wanted to finish. Mark: Alright, back to James, that's not his real name, Dallas WBAP. I want to continue with you because I want to ask you some questions related to this, OK? Including, has this sort of thing ever happened before, and why you think it may have happened, OK? Mark: OK, so gas got into it and blew the top off of it. It literally pushed the sea water all the way to the crown of the rig, which is about 240 feet in the air. When they opened the well is when the gas well kicked, and we took a humongous gas bubble kick up through the well bore. Another rig would slide over and do the rest of the completions work. Once they open that plug to go ahead and start cementing the top of the well (the well bore), we cement the top, and then basically we would pull off. It's a very complicated piece of equipment. James: That's a very simplistic way of explaining a BOP. James: When you close the stack, it's basically a humongous hydraulic valve that closes off everything from below and above. James: So that you can gain access back to the wellbore. Mark: Which has what purpose? Why do you do that? James: Next step, they opened the annular, the upper part of the BOP stack Mark: And the test, as best as you know, was sufficient? James: Alright, after the conclusion of the test, they simply opened the BOP stack back up. James: Correct, we're testing the negative pressure and positive pressure of the well, the casing and the actual marine riser. So they do all these tests to make sure the infrastructure can handle what's about to happen, right? Mark: Let me slow you down, let me slow you down. When they concluded the BOP stack test and the inner liner, they concluded everything was good. They displaced the mud out of the riser preparing to unlatch from the well two days later and they displaced it with sea water. I don't know the results of that test however, it must have passed because at that point they elected to displace the risers - the marine riser from the vessel to the sea floor. At that point, the BOP stack that he was talking about, the blow out preventer was tested. James: We had set the bottom cement plug for the inner casing string, which was the production liner for the well, and had set what's called a seal assembly on the top of the well. Wait, hold on, slow down, so you were working on this rig when it exploded? I was actually on the rig when it exploded and was at work. James: Just want to clear up a few things with the Petroleum Engineer, everything he said was correct. To hear the actual radio broadcast please visit Mark: Dallas Texas WBAP.

Rigzone has transcribed this broadcast for your convenience. On Friday, April 30th 2010, an anonymous caller contacted the Mark Levin Show to clarify the events that preceded the Deepwater Horizon tragedy.

Water bubble explode aew