Geospace Technologies Corporation have secured a Permanent Reservoir Monitoring contract award for Mero Fields 3 and 4 from Petrobras, operator of the Mero field Consortium. The contract encompasses the supply and installation of nearly 500km of the OptoSeis® Permanent Reservoir Monitoring (PRM) system covering 140 sq km of seabed area of Mero, located deep offshore in the Santos Basin, 180 kilometers off the coast of Rio de Janeiro, Brazil.