Portugal's oil company Galp Energia shares skyrocketed on Monday after the company announced that the first phase of its exploration in the Mopane field in offshore Namibia could contain some 10 billion barrels of oil.
Brazil's state-run oil company Petrobras found good quality oil in a sub-salt area of the offshore Santos Basin, one of the world's most promising oil frontiers, according to a securities filing by Petrobras on Tuesday.