True amplitude depth migration using curvelets

TitleTrue amplitude depth migration using curvelets
Publication TypeJournal Article
Year of Publication2021
AuthorsHamideh Sanavi, Peyman P. Moghaddam, Felix J. Herrmann
Keywordsamplitude, depth migration, Imaging, inversion, LSRTM

We have developed a true amplitude solution to the seismic imaging problem. We derive a diagonal scaling approach for the normal operator approximation in the curvelet domain. This is based on the theorem that states that curvelets remain approximately invariant under the action of the normal operator. We use curvelets as essential tools for approximation and inversion. We also exploit the theorem that states that the curvelet-domain approximation should be smooth in phase space by enforcing the smoothness of curvelet coefficients in the angle and space domains. We analyze our method using a reverse time migration-demigration code, simulating the acoustic wave equation on different synthetic models. Our method produces a good resolution with reflecting dips, reproduces the true amplitude reflectors, and compensates for incomplete illumination in seismic images.



Citation Keysanavi2021tad