An initial report by state-run oil firm Petroleo Brasileiro SA, or Petrobras, indicated the samples shared the same properties as Venezuelan oil. The Brazilian Navy has stepped up efforts to prevent thick crude oil from contaminating the Amazon Archipelago marine park . It has deployed two frigates alongside a fleet of smaller vessels to halt the mystery slick . OiI has been washing ashore along Brazil 's 2,500 km of beaches for several weeks . Scientists said there would be a " bigger environmental disaster " if it reached Abrolhos . Around 2,000 km² has already been cleaned up , while efforts to identify the source are ongoing . Petrobras recently announced tests showed the oil appeared to have Venezuelan properties .
The Brazilian Navy has stepped up efforts to prevent thick crude oil from contaminating the Amazon Archipelago marine park . It has deployed two frigates alongside a fleet of smaller vessels to halt the mystery slick . OiI has been washing ashore along Brazil 's 2,500 km of beaches for several weeks . Scientists said there would be a " bigger environmental disaster " if it reached Abrolhos . Around 2,000 km² has already been cleaned up , while efforts to identify the source are ongoing . Petrobras recently announced tests showed the oil appeared to have Venezuelan properties .