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FWI velocity models for quantitative interpretation of a deep water GOM datasetNormal access

Authors: Y. Cobo, C. Calderon-Macias and S. Chi
Event name: 80th EAGE Conference & Exhibition 2018 Workshop Programme
Session: WS07: Seismic Imaging with Ray and Waves - Where do we stand? Part II: Imaging
Publication date: 11 June 2018
DOI: 10.3997/2214-4609.201801913
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 801.14Kb )
Price: € 20

Full waveform inversion (FWI) has become the method of choice for deriving shallow velocity models that potentially improve interpretation of images in complex geologically settings. Recently, a combination of diving waves and reflections is being used resulting in an increase of depth range for updating the model. In this work, we evaluate the potential for utilizing velocities from FWI as a background model for quantitative interpretation. Our results show that using a velocity model as a low frequency model (LFM) with a higher vertical and lateral resolution obtained from the FWI process results in a higher quality post-stack inversion compared to the traditional approach that uses sparse well velocities extrapolated within a structural framework as a LFM.

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