AVO Monitoring of CO[subscript 2] Sequestration
Name
Brown_avo_part1.pdf
Size
9.64 MB
Format
Adobe PDF
Checksum (MD5)
ba19efdb7df280177675ae6be8d6e28d
Author(s)
Brown, Stephen
Hagin, Paul
Bussod, Gilles
Date Issued
2011
Publisher
Massachusetts Institute of Technology. Earth Resources Laboratory
Series/Report no.
Earth Resources Laboratory Industry Consortia Annual Report;2011-08
Abstract
Standard geophysical methods for monitoring CO[subscript 2] injection have been proposed but many have severe limitations. In particular, while they can be used to monitor the presence or absence of CO[subscript 2] during an injection, they are unable to quantify changes in CO[subscript 2] saturation in most reservoirs. Amplitude versus Offset (AVO) attributes may be able to provide more sensitive discriminators for CO[subscript 2] presence. We propose a workflow useful for the prediction of the AVO response under arbitrary geologic conditions. Using this method we perform an experiment where AVO is combined with an upscaling scheme that propagates the effects of small-scale heterogeneities up to the scale of seismic observation. This experiment demonstrates the ability of the AVO technique to not only determine the presence or absence of CO[subscript 2], but also to determine the degree of CO[subscript 2] saturation in the reservoir.
Subjects
CO2
AVO
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