ExplorationPetrobras wins more time for Libra pre-salt campaignMarket regulator ANP grants Brazilian operator an extra five years to conclude appraisal workMore time: the Transocean drillship Deepwater Corcovado (formerly Ocean Rig Corcovado) is working for Petrobras in the Mero/Libra pre-salt areaPhoto: TRANSOCEANFabio PalmigianiRio de Janeiro