Discovery of second pipe in Deepwater Horizon riser stirs debate among experts

For the first time Friday, the Coast Guard and BP acknowledged that a mysterious second pipe, wedged next to the drill pipe in what remains of the Deepwater Horizon’s riser, is fouling up the works where the well is spewing hundreds of millions of gallons of crude oil into the Gulf of Mexico.

BP PLC via The Houston ChronicleTwo pipes are seen in this view of the riser just above the Macondo well’s blowout preventer, captured on BP video in June, just after it was cut.