Bootstrapped Waveform Inversion: Long-wavelength Velocities from Pure Reflection Data
G. Yao and M. Warner
Event name: 77th EAGE Conference and Exhibition 2015
Session: Full Waveform Inversion VI
Publication date: 01 June 2015
Info: Extended abstract, PDF ( 1.49Mb )
Price: € 20
Conventional FWI cannot successfully invert pure reflection data to recover the long-wavelength velocity model. We present an FWI methodology that can solve this problem, and demonstrate its success inverting data from a simple but difficult-to-invert synthetic model. The method proceeds by modifying the FWI objective function, and by interleaving a migration-like form of FWI with a tomography-like form. Starting from a constant-velocity, this FWI approach produces a full-bandwidth velocity model that accurately depth migrates the reflection data.