Upon closing of the Petrobras-Pampa deal, YPF would take a 33.3% interest in the Rio Neuquen block and a 80% share in the Aguada de Arena block, according to a securities filing.

The state-led Argentina company also made a $140 million loan to Pampa to help finance the purchase of the assets, which YPF sees as prospective for shale and tight gas.

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