Methodology Utilizing Continuous Source and Receiver Wavefields - a 3D Case Study

In summer 2018, PGS acquired a survey offshore Brazil using an acquisition and processing method based on continuous wavefields on top of a survey that had been previously acquired using a conventional dual-source setup. In this paper, we compare processing results obtained with the continuous wavefield method to results obtained from the conventional comparison data. The denser spatial sampling obtained with the continuous wavefield method provides improved spatial resolution in the images and permits proper anti-alias protection of the input to migration. Equivalent penetration is obtained in both surveys even though significantly less energy has been emitted with the continuous wavefield methodology.