Perozzi, Lorenzo; Giroux, Bernard; Kofman, Randy S. et Schmitt, Douglas R. (2014). Preparatory Work for the Seismic Monitoring of CO2 Storage at a Prospective Site in the St. Lawrence Lowlands, Canada. In: 76th EAGE Conference and Exhibition 2014 / 76th European Association of Geoscientists and Engineers Conference and Exhibition 2014: Experience the Energy - SPE EUROPEC 2014, 16-19 juin 2014, Amsterdam, Pays-Bas.
Ce document n'est pas hébergé sur EspaceINRS.Résumé
The success of the geological storage of CO2 depends on the capability to monitor movements of the injected fluid into the subsurface. For understanding the effects of CO2 as a pore fluid on the overall rock seismic response, a series of ultrasonic measurements on two samples of saline aquifer sandstones of the Potsdam Group have been made showing clear P-wave variations with CO2 varying phase state. Significant amplitude variation was only observed in the Covey Hill sample. The laboratory measurements and well log data were used to calibrate a numerical model that was used to perform poro-viscoelastic forward modeling of time-lapse walkaway VSP surveys. The results show that supercritical CO2 injected in the reservoir, results in a clear seismic signature. Finally, the modeling results also indicate that the possibility to rely on AVO analysis to monitor the CO2 plume is compromised by a refracted wave that appear early in the wave field.
| Type de document: | Document issu d'une conférence ou d'un atelier |
|---|---|
| Mots-clés libres: | aquifers; digital storage; petroleum reservoir evaluation; seismic prospecting; seismology; water injection; well logging |
| Centre: | Centre Eau Terre Environnement |
| Date de dépôt: | 10 mai 2018 16:08 |
| Dernière modification: | 22 févr. 2021 18:37 |
| URI: | https://espace.inrs.ca/id/eprint/3782 |
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