Beckwith, JA and Clark, R (2013) Simultaneous determination of Q and AVO from surface seismic data. In: Poster Presentations. EAGE Workshop on Seismic Attenuation, 28-30 Oct 2013, Singapore. EAGE
Abstract
Knowledge of the interval quality factor value, Q, is of great interest in seismic exploration. Interval Q values can be used as a lithology and pore fluid discriminator as well as in processing of seismic data to restore high frequencies to deep reflectors. Q values are generally obtained from VSP data which has a spatial coverage limited to borehole locations therefore a method to derive Q from surface seismic data is desirable due to the much larger spatial coverage of the derived Q values. Pre-Stack Q Inversion is a method whereby not only is interval Q calculated from pre-stack data but as a by product attenuation-free AVO is produced. Here we introduce updates and extensions to the PSQI algorithm including an s-tau -p transform designed to overcome aliasing problems in tau-p domain data as well as inversion for powerlaw frequency dependent Q. The inversion intercepts are also analyzed with a view to deriving estimates of the p-wave, s-wave and density of the region surrounding and including the interval of interest. It is found that it is possible to constrain the highest interval velocity surrounding the region of interest through a Monte Carlo simulation.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Institute for Applied Geosciences (IAG) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 11 Aug 2016 09:45 |
Last Modified: | 03 Nov 2016 04:38 |
Published Version: | http://dx.doi.org/10.3997/2214-4609.20131865 |
Status: | Published |
Publisher: | EAGE |
Identification Number: | 10.3997/2214-4609.20131865 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:103166 |