OPINION: Brazilian independent PetroRio's purchase of operating stakes in two Campos basin blocks offers a reminder that there is more to Brazil than giant pre-salt fields.

PetroRio last week agreed to buy BP’s stakes in blocks BM-C-30 and BM-C-32, taking over operatorship of Wahoo and Itaipu.

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These two fields were discovered on the fringes of the pre-salt fairway over a decade ago by former operators Anadarko Petroleum — since acquired by Occidental Petroleum — and Devon Energy.