It seems that the blowout preventer is the critical item. Howard White #1 and today's blowout have one thing in common the failure of the blowout preventer.

"CALGARY, ALBERTA--(Marketwire - Sept. 13, 2007) - Montello Resources Ltd. ("Montello") (TSX VENTURE:MEO - News) is pleased to announce that it has successfully run 9 5/8" Intermediate casing and cemented it in place on The John Bowen #2 Well ("the Montello Well"). This procedure has been approved by "Tennessee Oil and Gas". Installed in the intermediate casing is a sub-surface Weatherford downhole deployment valve that can be activated to shut off the well. This valve has been function tested and will assist in high pressure snubbing operations if necessary. A formation leak off test has been performed which is important to help determine well control. The formation's breakdown pressure (how much pressure the formation can withstand at the bottom of the casing prior to breaking down and leaking into fractures closer to the surface) is believed to be one of the potential reasons why there is oil leaking to surface around the Howard-White #1 Well. "

http://ca.us.biz.yahoo.com/ccn/07091...

If the downhole deployment valves have been pressure tested then there should be no problem!