Brazilian major Petrobras has spudded an appraisal well on Sagitario, a pre-salt discovery in Brazil’s Santos basin, where Shell and Repsol are partners. The well, denominated 3-BRSA-1370-SPS was spudded with the Ocyan-owned ODN-1 drillship in a water depth of 1841 metres on Block S-M-623, which forms