Petrobras has announced the first commercial discovery of oil accumulation in the Campos Basin’s presalt layer in the area of the Marlim Sul field during drilling of Well 6-MLS-233-RJS (Petrobras), informally known as Poraquê Alto. At a final depth of 4568 m, the well is located 115 km off the coast of Rio de Janeiro State at a water depth of 1107 m. Profile data, gas detection, formation testing by cable, and fluid samples verified the discovery. Current data indicate carbonate reservoirs of good porosity and permeability at a depth of 4420 m and a 45-m oil-presence thickness.


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