Ice crystals cause Gulf oil box problems - Gulf spill likely bigger than Exxon Valdez, claims expert [View All]

Source: AP

ON THE GULF OF MEXICO - Icelike crystals encrusting a 100-ton steel-and-concrete box meant to contain oil gushing from a broken well deep in the Gulf of Mexico forced crews Saturday to back off a long-shot plan to contain the leak.

The buildup on the specially constructed containment box made it too buoyant and clogged it up, BP chief operating officer Doug Suttles said. Workers who had carefully lowered the massive box over the leak nearly a mile below the surface had to lift it and move it to the side. Now they're trying to unplug it while they look at other solutions.

More than 200,000 gallons of crude have spewed into the Gulf since a rig exploded April 20, killing 11. The containment box, a method never before attempted at such depths, had been considered the best hope of stanching the flow in the short term.

"I wouldn't say it's failed yet," Suttles said. "What I would say is what we attempted to do last night didn't work."

Giant bubbles
The deadly blowout was triggered by a bubble of methane gas that escaped from the well and shot up the drill column, expanding quickly as it burst through seals and barriers before exploding, according to interviews with rig workers conducted during BP's internal investigation.

While the cause of the explosion is still under investigation, the sequence of events described in the interviews provides the most detailed account of the April 20 blast that killed 11 workers and touched off the underwater gusher that has poured more than 3 million gallons of crude into the Gulf.


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