A practical acoustic full waveform inversion workflow applied to a 3D land dynamite survey

Full waveform inversion (FWI) has been used to successfully build high-resolution earth velocity models for marine data. For land data sets, FWI using acoustic wave equation (acoustic-FWI) remains challenging due to the lack of modeling of strong surface waves, converted waves, phase dispersion, and near-surface weathering layer distortion. In addition, for land dynamite surveys, the source wavelet information is usually missing, and the recorded individual waveform varies greatly because of the spatially variant shot characteristics such as source charge size, shot depth, and hole-pattern as well as the distortion caused by the near-surface weathering layer. We designed and implemented a practical and comprehensive workflow to mitigate missing source wavelet information and vast spatial variation in the waveforms and to address the common challenges of acoustic-FWI application on land surveys during field data preparation.