Although still subject to more detailed technical assessments to render area development viable, it is estimated that Petrobras' share of the recoverable volume will top-out at some 2.1 billion of oil equivalent (boe) in the 19 areas declared commercially viable in the three basins.
Three areas Petrobras operates in the old BS-500 block, in the Santos Basin, were declared commercially viable, resulting in the Tambuata, Pirapitanga and Carapia oil and natural gas fields, while one area in the old BS-400 block was annexed to Mexilhao Field's ring fence. It is estimated there are recoverable volumes of some 560 million boe in these areas.
Meanwhile, four new offshore and three new onshore areas have been defined in the Espirito Santo Basin, all of which operated by Petrobras. The new Carapo and Camarupim gas fields, and two other natural gas and light oil areas that will be annexed to the Golfinho and Canapu fields, have been defined. Recoverable volumes there are estimated at about 168 million boe. Three new fields--Saira, Seriema, and Tabuiaia--have been defined onshore. Although they have slightly more modest volumes compared to the basin's offshore portion, these finds are nonetheless greatly important to maintain the Espirito Santo Basin's onshore production.
Finally, eight new areas have been declared commercially viable in the Campos Basin: The Maromba field, in the old BC-20 block, operated by Petrobras in association with Chevron; the Caratai and Carapicu fields, in the old BC-30 block; and, in the old BC-60 block, the Catua, Caxareu, Manganga, and Pirambu fields, in addition to one area to be annexed to the Baleia Azul Field. The recoverable volumes are believed to top-out at about 1.37 million boe there.
The new discoveries show the precision of the company's exploratory program. Petrobras has a diversified concession, technology and investment portfolio, over and beyond a qualified technical staff, which allows it to increase both oil and natural gas reserves and production on an ongoing basis.
Additionally, Shell, as the operator, declared two new fields, commercially viable in the old BS-4 block. Petrobras holds 40% of the rights for these fields.
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