Petrobras (PBR) said Thursday it signed contracts with Petronas Petroleo Brasil to acquire 50% stakes in the Tartaruga Verde and Espadarte - Module III fields in the Campos Basin offshore Brazil for $450 million, regaining full ownership in the assets.

The company said $50 million was paid at signing, with $350 million to be paid upon closing. The deal consideration includes two deferred installments of up to $25 million each, according to Petrobras.

The deal is subject to approval by Brazil's National Agency of Petroleum, Natural Gas and Biofuels.