Petro Rio S A : DECEMBER 2021 OPERATIONAL DATA

December 2021 Operational Data

Rio de Janeiro, January 6, 2022 - 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.

Daily Production (boepd)

	(1)			TBMT	Manati
Month	Frade	Polvo		(80%)	(10%)(2)	Total
January	12,005	9,498		6,701	2,157	30,362
February	16,247	5,904		5,934	1,806	29,891
March	17,005	8,655		5,748	2,289	33,698
1Q21	15,086	8,019		6,128	2,084	31,317
April	15,716	8,157		5,698	1,982	31,553
May	12,653	9,353		5,703	2,304	30,013
June	16,454	9,019		4,350	2,287	32,110
2Q21	14,941	8,843		5,250	2,191	31,225
	(1)	Cluster Polvo + TBMT	Manati
Month	Frade		(95%)	(10%)(2)	Total
July	16,616		11,622	1,989	30,228
August	16,588		15,054	1,950	33,593
September	15,988		13,390	1,666	31,044
3Q21	16,398		13,356	1,868	31,621
October	15,630		13,807	2,042	31,480
November	13,843		15,238	2,154	31,235
December	15,610	16,995(3)	1,575	34,180
4Q21	15,028		15,347	1,924	32,298
2021	15,363		14,236	2,017	31,615

Oil Offtakes (bbl)

Month	Frade	Polvo		TBMT	Total
January	-	-		-	-
February	1,020,846	514,794		392,072	1,927,712
March	-	-		-	-
1Q21	1,020,846	514,794		392,072	1,927,712
April	1,029,950	601,345		312,163	1,943,457
May	-	-		-	-
June	500,001	393,610		-	893,610
2Q21	1,529,950	994,955		312,163	2,837,067
July	-	754,168		319,742	1,073,910
August	986,039		-	986,039
September	-	424,563	424,563
3Q21	986,039	1,498,474	2,484,513
October	1,005,505	916,746	1,922,251
November	-		-	-
December	994,978	909,945	1,904,922
4Q21	2,000,482	1,826,691	3,827,173
2021	5,537,317	5,539,148	11,076,465

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.
3. 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.

About PetroRio
PetroRio is the largest independent oil and gas Company in Brazil. The Company seeks to increase production through the acquisition	Investor Relations
of new producing assets, redevelopment, increased operational efficiency and rationalization of operating costs and corporate	ri.petroriosa.com.br
expenses. PetroRio's main objective is to create value for its shareholders with growing financial discipline and preserving its liquidity,	[e-mail]
with full respect for safety and the environment. For further information, please visit the Company's website: www.petroriosa.com.br.	[phone]