Constellation Oil Services has started operations of the jack-up rig ADMarine 511, under contract with Petrobras for a plug & abandonment (P&A) campaign in Sergipe, Alagoas, Ceará and Potiguar basins. Announced on March 31, 2025, the US$ 170 million contract covers the rig’s mobilization from Bahrain and a firm term of 1,143 days, with extension options. The three-leg cantilever unit, model MSC CJ46-X100D, underwent inspections and upgrades in Brazil to meet local regulatory requirements before commencing operations.
The campaign focuses on well P&A activities linked to fixed structures in shallow waters — a segment expanding in Brazil as decommissioning programs progress. ADMarine 511, capable of operating up to 375 feet (114 meters) deep, completed classification surveys and technical modifications at Estaleiro Atlântico Sul before deployment. Constellation highlighted the project’s contribution to local employment and compliance with Brazilian safety standards.
The contract reinforces the participation of international operators in Brazil’s P&A segment and signals Petrobras’s intention to accelerate decommissioning activities in shallow-water areas. For suppliers and local yards, the campaign opens demand opportunities for mobilization, inspection, and compliance services.
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