Petrobras advances US$450 million Mero seismic monitoring project into data phase

Petrobras has advanced the world’s largest permanent seismic monitoring project at the Mero field, in Brazil’s Santos Basin. The initiative, backed by approximately US$450 million in investments, completed its first phase in March 2026 and is now moving into a key stage, with first data acquisition expected in the second quarter.

More than 460 km of seabed cables have already been installed, covering an area of 222 km². The system will monitor production activities at FPSOs Guanabara (Mero 1) and Sepetiba (Mero 2), helping Petrobras and its partners track reservoir behavior in real time.

A second phase is planned to add another 316 km of cables, with completion expected in 2027, expanding the monitoring network across the field.

The project is centered on Mero, one of Brazil’s leading pre-salt assets, which was producing more than 680,000 barrels per day as of January 2026.

More than a new investment announcement, this marks a relevant execution milestone: the project has moved from installation into the operational data phase, with direct implications for reservoir management and recovery efficiency.