ExplorationPetrobras hits oil at high-profile pre-salt area off BrazilDrilling of the Araucaria-S wildcat encounters oil shows in Uirapuru area in the Santos basinIt's a hit: the Seadrill drillship West Tellus drilled the Araucaria-S prospect in the Uirapuru pre-salt areaPhoto: SEADRILLFabio PalmigianiRio de Janeiro