Paper Summary
A multiparameter inversion workflow that jointly estimates velocity and reflectivity was applied to an ocean bottom node (OBN) dataset from the deep-water Santos Basin, offshore Brazil. The
complex geology—featuring layered evaporites above pre-salt reservoirs—poses significant
imaging challenges due to salt-related illumination issues and resolution loss. Starting from minimally processed hydrophone data, the inversion improved structural imaging and amplitude fidelity by integrating velocity modeling and least-squares migration in a unified framework. The results highlight the workflow’s value in resolving subsurface complexity and informing exploration and reservoir development in pre-salt environments