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Tuesday's announcement follows a six-year appraisal program, which included 3D seismic data acquisition, the drilling of seven wells and an extended well test.
Petrobras holds a 65% operating stake in BM-S-11 alongside the UK's BG Group (25%) and Portugal's Galp Energia (10%).
The consortium said it is yet to sign unitization agreements needed to develop parts of the fields, which encroach on Petrobras' Rights Transfer area.
According to BG, the group could seek an extension to a 180-day deadline to submit a development plan to ANP.
"Because of the need for unitization agreements to be negotiated, ANP may amend this deadline and allow submission of a unitized area development plan when the unitization agreement is signed," the London-based firm said.