S-Wave Anisotropy Estimate by Automated Image Registration

摘要

The present disclosure provides a system and method for estimating fracture density within a subsurface formation from S-wave seismic data. In one embodiment, the S-wave seismic data is separated into fast (“S₁”) and slow (“S₂”) data. A computer is used to compute local similarity of the S₁ and S₂ data and to compute a cumulative time-difference by which the S₂ data lags the S₁ data from the local similarity. Based on the computed cumulative time-difference, the fracture density of a subsurface formation is estimated.