CNOOC Petroleum Brasil Ltda. is the Brazilian subsidiary of China National Offshore Oil Corporation (CNOOC) Limited, a global energy company focused on crude oil and natural gas exploration and production. Established in 2013 and headquartered in Rio de Janeiro, it primarily operates in Brazil's offshore deepwater pre-salt basins.
The company holds participating interests in major fields, including a 9.65% stake in the unitized Mero field (part of the Libra production-sharing contract in the Santos Basin, operated by Petrobras) and approximately 7-10% in the Buzios field. It has also secured operatorship in exploration block S-M-1813 and non-operating interests in Pelotas Basin blocks. CNOOC Petroleum Brasil contributes to high-volume projects like Mero, which averaged over 680,000 barrels per day in early 2026, supporting reservoir monitoring and development initiatives.
