Broadband Seismic Data Processing in Deepwater Fields

This technical report details a comprehensive broadband seismic data processing strategy applied to a deepwater field, focusing on enhancing fidelity for reliable imaging and quantitative interpretation. The workflow integrates multiple stages, including early-stage signal conditioning, joint source-receiver deghosting, and amplitude-preserving demultiple strategies. Special attention is given to minimizing tuning effects and managing amplitude variations with offset (AVO) behavior. The report outlines the application of a wide azimuth (WAZ) reprocessing strategy that leverages various surveys with differing acquisition philosophies. It describes the methodologies employed, such as 3D sparse τ–p inversion for deghosting and TTI Wave-equation Kirchhoff pre-stack depth migration for imaging. The results indicate improved spectral balance and robust amplitude behavior across offsets and azimuths, demonstrating that a QI-driven processing philosophy can yield seismic data suitable for advanced interpretation and reservoir characterization in complex deepwater environments.