Where is the methane from the BP Deepwater Horizon blowout?

Natural gas in various forms comprised approximately 2/3 of the hydrocarbons emitted from the Deepwater Horizon well blowout. Methane is believed to compose an estimated 87.5% of that natural gas. Sampling in June 2010 found no microbial breakdown of methane. [See http://www.sciencemag.org/content/330...