Conclusions

We present an approach to aid in velocity model building using misties between modeled synthetic seismograms from well log data and the seismic image. The proposed approach provides a unique method for integrating well log data in conventional velocity model building workflows. The proposed workflow is not a substitute for conventional velocity analysis, but it may help to reduce nonuniquness in areas of complex stratigraphy or anisotropy. In our approach, local similarity is used to estimate the mistie at every sample along the synthetic seismogram and uses the result to update the migration velocity at the well location. Because inaccuracies in the migration velocity are directly related to the mis-tie and observed in seismic-well ties, this information can be used to update the migration velocity at the well location and be spread throughout the model using predictive painting. Iteratively updating the migration velocity using the proposed workflow results in a high-resolution migration model that is consistent with well log data.