Paper Summary
In general, Least-Squares Migration (LSM) can produce images corrected for overburden effects, variations in illumination, and incomplete acquisition geometry. The modeling engine of our LSM implementation consists of a visco-acoustic anisotropic one-way wave-equation extrapolator. It has the advantage of efficiently propagating high-frequency seismic data using high-resolution earth models (e.g. derived from Full Waveform Inversion). Applications to synthetic and field data examples (from the Gulf of Mexico and the North Sea) consistently delivered higher resolution images with better amplitude balance when compared to standard seismic migration