BRIEF-Brazil's Petrorio says takes over Maersk's 40 pct in Polvo field
Dec 4 (Reuters) - Petrorio SA
* Brazil's Petrorio says the national oil regulator ANP approved the exit of Maersk from Polvo field
* Petrorio to take over Maersk's 40 percent stake and hold 100 percent of asset Further company coverage: (Reporting by Reese Ewing. Editing by Jane Merriman)
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