Krom
Another possibility , not to put any damper on the drilling, is maybe they are heading to presalt, as CNOOC was mentioned in it's last drilling with Addax that they didn't go deep enough....which is also positive, as without some showings, they might have stopped the drilling process. All conjecture but there are good reasons to be positive as we don't hear of any P&A on the well(s) and they are still there with copious expenses going on!!
Baz