Time-lapse wave-equation migration velocity analysis

Advanced concepts in active and passive seismic monitoring using full wavefield techniques

“…We note that the new time-dependency of the problem allows for many possible imaging/inversion approaches (Lumley et al, 2003;Shragge and Lumley, 2013) The current state of the art in 4D seismic is to perform waveequation (time-domain) imaging using the initial estimated (baseline) velocity model to image all time-lapse data sets. We are interested in combining all data sets to simultaneously optimise each image and inversion in a 4D sense, and as an explicit part of the process to estimate the time-dependent velocity/earth model underlying each data set and image.…”