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A New Take on FWI - Wavefield Reconstruction InversionNormal access

Authors: T. van Leeuwen, F.J. Herrmann and B. Peters
Event name: 76th EAGE Conference and Exhibition 2014
Session: FWI - Theoretical Developments I
Publication date: 16 June 2014
DOI: 10.3997/2214-4609.20140703
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 499.04Kb )
Price: € 20

Summary:
We discuss a recently proposed novel method for waveform inversion: Wavefield Reconstruction Inversion (WRI). As opposed to conventional FWI – which attempts to minimize the error between observed and predicted data obtained by solving a wave equation – WRI reconstructs a wave-field from the data and extracts a model-update from this wavefield by minimizing the wave-equation residual. The method does not require explicit computation of an adjoint wavefield as all the necessary information is contained in the reconstructed wavefield. We show how the corresponding model updates can be interpreted physically analogously to the conventional imaging-condition-based approach.


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