Ism...do you think they will driveI` the 36" caseing in the mud then drill inside of it then set the 20" and cement it into place then set the BP on the 20"??because setting the 36"in mud in 6000ft of water without cementing in place will ever fly IMO.Even with the two casing set in i mile deep water is still is little scary.When everything is said and done (hole completed)the well head is setting on the ocaen floor.how do they do that is behond me..I have been around alot of onshore rigs but none off shore....