
The well is currently spewing 5,000 barrels a day, or about 210,000 gallons, but that figure could reach 60,000 barrels a day, equivalent to 2.5 million gallons a day, if efforts to stop the leaks fail.
The figure was given in a briefing by executives from BP and Transocean, which owned the sunken Deepwater Horizon rig, to the Congress House Energy and Commerce Committee.
Ed Markey, a Democrat Congressman from Massachusetts on the committee, said they were told the worst case scenario could see the level of oil rise to 40,000 barrels, or even 60,000 barrels a day.