By OGJ editors
HOUSTON, Nov. 21 -- Petroleo Brasileiro SA (Petrobras) reported the completion of drilling of two wells in the presalt layer off Espirito Santo state. The wells proved discovery of 30° gravity oil in the Parque das Baleias area.

Officials estimated the recoverable volume of the light oil reservoirs beneath the Baleia Franca, Baleia Azul, and Jubarte heavy oil fields, at 1.5-2 billion boe.

The 6-BFR-1-ESS and 6-BAZ-1DB-ESS wells were drilled 80 km offshore and 5 and 6 km respectively, to the north and south of another discovery well 1-ESS-103A in the presalt section under the Jubarte field.

The reservoirs of the two latest wells are under a layer of salt as thick as 700 m and at 1,348-1,426 m from the water line. The reservoirs are 4,200-4,800 m subsea and have oil-bearing porous thicknesses of 190 and 300 m.

So far, six wells have been drilled in the Espirito Santo presalt layer, all successful. With these discoveries the total estimated volume of oil in the Parque das Baleias area, including reservoirs above and below the salt layer, already amounts to 3.5 billion boe.