Reuters.com | Delay in Brazil's pre-salt oil auction overturned Reuters.com Brazil is slated to auction eight blocks with more than 12 billion barrels of estimated oil reserves. Oil companies will be allowed to operate fields for the first time in a region known as the pre-salt, where hydrocarbons are trapped under thousands ... Shell, Exxon win blocks in Brazil's pre-salt oil auction Brazil Oil Auction Beats Expectations Market Chatter: Exxon Mobile, Shell Reportedly Win Oil Blocks in Brazil at Auction |