2024
conference-paper
OpenAlex
Guojian Shan, Jingru Chen, Zhemin Tan, John Chen et autres
We apply extended full waveform inversion (FWI) to GOM data to improve subsalt imaging. Extended FWI extends the surface data matching with time shift and utilizes relative matching to mitigate the cycle-skipping and amplitude discrepancy. Both synthetic and field data examples demonstrate …
us
(code pays fourni par la source)
2022
conference-paper
OpenAlex
Yonghe Sun, Zhemin Tan, Jeff Nealon, James Davenport et autres
Analysis of seismic amplitude-versus-angle (AVA) is a primary technique for deriving hydrocarbon indicators. Many seismic processing algorithms distort amplitudes. We extend existing work and propose a general framework for modeling-based amplitude recovery (MBAR) through paired processing of synthetic and field data. The …
us
(code pays fourni par la source)
2022
conference-paper
OpenAlex
Yonghe Sun, Chunling Wu, Mark Fan, Zhemin Tan
A conventional approach to attenuation compensation for seismic imaging is to pick attenuated time t* from depth- migrated data and to invert t* in tomography for spatially varying Q. The drawbacks of the approach include workflow complexity and spectral distortions by depth …
us
(code pays fourni par la source)