Petrobras has hit another big pay day at its seventh appraisal well inside the Libra block, in the pre-salt layer of the Santos basin, the firm reported on 15 June.
The Brazilian oil giant said it was "Libra's largest net pay" to date - since the last announcement - the column measuring 410m thick. The discovery confirmed good-quality 27º API oil. The well, also called 3-BRSA-1339A-RJS or, informally, NW2, is in the northeast section of the Libra block, 180km off Rio de Janeiro.
Drilling is underway at an eighth well, 3-RJS-743A, also in the northeast of the Libra block. Petrobras said that seven wells have been concluded, six by the Libra Consortium, which is made up of operator Petrobras (40%), Shell (20%), Total (20%), CNPC (10%), and CNOOC (10%). The production sharing agreement is managed by Pre-Sal Petroleo (PPSA).
In March, Petrobras confirmed a discovery of 301m at Libra, which it then-said was the biggest find at Libra.
Libra was originally discovered in 2010. The field is thought to contain 8-12 MMbbl of reserves.
The first exploration well, 3-RJS-731, was spud by the Schahin Cerrado drillship (which was recently purchased at auction by Ocean Rig) in August 2014, just 5km southwest of the discovery well 2-ANP-2A-RJS.
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