Petro Rio December 2021 Operational Data

Petro Rio S.A. (“Company” or “PetroRio”) (B3: PRIO3), following best practices in corporate governance and transparency, informs its preliminary and non-audited Operational Data for the month of December.

Obs.:

(1)  Frade figures account for a 70% interest in the Frade Field until February 4 and 100% interest as of February 5, when the Company announced the closing of the acquisition of the remaining 30% interest.

(2)  On November 5, 2020, the sale of the 10% interest in the Manati Field held by PetroRio was announced, which awaits precedent conditions for the transaction’s closing.

(2)  Tubarão Martelo Field production in December was impacted by a shutdown in the OGX-44HP well due to a failure in the electrical submersible pump (ESP) in the first days on the month, which decreased production by 1,4 kbbld. A workover is being carried on by the Kingmaker rig, expected to be concluded in January.