Transmission-based surface-consistent framework for residual statics, deconvolution, and FWI: A new paradigm for near-surface analysis

Abstract

We developed a novel surface-consistent processing framework that applies to transmitted wavefields (e.g., diving waves/refracted waves). Automatic velocity estimation from traveltime and full-waveform inversion, residual time shift corrections, and near-surface amplitude deconvolution are performed on the raw seismic gathers with minimal data preconditioning. In this implementation of the transmission-based surface-consistent analysis, we introduce a complete prestack and preprocessing workflow to fully analyze the near surface and enable highly specialized processes for what concerns land data imaging and reservoir characterization. Billions of traveltimes and traces can be analyzed automatically, providing enormous benefits in the execution time and in the accuracy and robustness of obtained results. The new paradigm for near-surface analysis opens the door to a better utilization of land seismic data for reservoir imaging and characterization.

Efficient 1.5D full waveform inversion in the Laplace-Fourier domain

“…The method is part of a larger near-surface related processing framework and has been applied to field data [33], showing good correspondence of the produced velocity model features with results obtained from helicopter-borne time-domain electromagnetic data [34].…”