RIO DE JANEIRO, Feb. 16, 2016 /CNW/ – Petro Rio S.A. (“PetroRio” or the “Company”) (BM&FBOVESPA: PRIO3, TSX-V: PRJ) hereby announces that it was notified by Shell Brasil Petróleo Ltda. (“Shell”) of the termination of the purchase and sale agreement for the acquisition of the 80%…