Bless the Wee Critters: "Bacteria Removed At Least 200,000 Tons of Oil & Gas Following Macondo"

Multiply by 7 to 7.4 (depending on gravity) to get barrels equivalent. It's a lot of oil.
From Rigzone:

Naturally-occurred bacteria in the U.S. Gulf of Mexico consumed and removed in the five months following the Macondo oil spill at least 200,000 tons of oil and natural gas that was dispersed into the deepwater Gulf from Macondo, according to researchers at the University of Rochester and Texas A&M University....MUCH MORE