The impact of broadband acquisition and processing on imaging Brazil's deep water Campos basin

Summary The Campos basin offshore Brazil has proven to be a challenging area for seismic imaging, because of its complex geology and deep pre-salt targets. By providing an improved low-frequency response and a broader usable bandwidth, seismic data recorded using variabledepth streamer acquisition appears to be an appropriate and promising solution for oil and gas exploration offshore Brazil. We show the comparison between images obtained using conventional flat tow streamer data with and without de-ghosting applied, as well as the impact of broadband variable-depth towed streamer acquisition in combination with de-ghosting. Furthermore, the impact of increasing the maximum offset and azimuth on the image quality of variable-depth streamer data is shown, as well as that of TTI anisotropic depth imaging. As such we demonstrate how new acquisition technology combined with advanced processing techniques is beneficial to post- and pre-salt imaging in the Campos basin.