What is it about?
Seismic attenuation, which leads to amplitude decay and phase velocity dispersion, reflects the mesoscopic heterogeneities in fluid-saturated porous media. As a result, seismic attenuation offers valuable insights into the lithology of porous sediments. We apply 2D viscoacoustic full-waveform inversion to the time-lapse data sets acquired in the North Sea Volve field to characterize the shale/sandstone sequence, oil reservoir and its production-related time-lapse changes.
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Photo by Rifqi Ali Ridho on Unsplash
Why is it important?
Time-lapse viscoacoustic full-waveform inversion, applied to true-amplitude seismic data, produces high-resolution baseline and monitoring velocity and attenuation models as well as their time-lapse changes related to production, all of which are correlated with well-log data and align with prior knowledge of the field's lithology, stratigraphy, and production history.
Perspectives
I hope this article contributes to a better understanding of the Earth's elastic and anelastic properties, and to the practical applications of exploration seismology.
Donggeon Kim
Pennsylvania State University
Read the Original
This page is a summary of: Why do seismic attenuation models enhance time-lapse imaging? A 2D viscoacoustic full-waveform inversion case study from the Volve field, Geophysics, June 2025, Society of Exploration Geophysicists,
DOI: 10.1190/geo2024-0793.1.
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