Petrobras Unlocks Large Volumes of Oil in Espirito Santo Pre-Salt Layer

Santos Basin, Campos Basin
(Click to Enlarge)

Petrobras has informed the National Petroleum Agency (NPA) that it has completed the drilling of two new wells in the pre-salt layer off the coast of Espirito Santo and proved an expressive discovery of light oil (30 degrees API) in the area called Parque das Baleias. The recoverable volume of the discoveries, made in pre-salt reservoirs located underneath the Baleia Franca, Baleia Azul, and Jubarte heavy oil fields, is estimated between 1.5 and 2 billion barrels of oil equivalent (boe)

The 6-BFR-1-ESS and 6-BAZ-1DB-ESS wells were drilled nearly 80 kilometers off the coast and five and six kilometers to the north and to the south, respectively, of discovery well 1-ESS-103A, located in the pre-salt section under the Jubarte heavy oil field, which has been producing, at a high flow, since last September.

In these two wells, the reservoirs were discovered under a layer of up to 700 meters of salt and at depths
ranging from 1,348 and 1,426 meters from the water line. The reservoirs are located 4,200 to 4,800 meters
below sea level and have oil-bearing porous thicknesses of 190 and 300 meters, proving the major potential
of the discoveries.

So far, six wells have been drilled in the Espírito Santo pre-salt layer, all of which successfully. With the new
discoveries, the total estimated volume of oil in the Parque das Baleias area, including the reservoirs located
above and below the salt layer, already adds up to some 3.5 billion boe.

The excellent results achieved by these two drillings, the excellent Long Duration Test (LDT) responses
obtained from pioneer well 1-ESS-103A, and the logistics facilities already installed and currently being
installed in the area, led Petrobras to heighten the studies to accelerate pre-salt production at Espirito



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