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Sensitivity of seismic response for monitoring CO₂ storage in a low porosity reservoir of the St Lawrence Lowlands, Québec, Canada: Part 1 - Laboratory measurements.

Perozzi, Lorenzo; Giroux, Bernard; Schmitt, Douglas R.; Gloaguen, Erwan; Kofman, Randy S. (2017). Sensitivity of seismic response for monitoring CO₂ storage in a low porosity reservoir of the St Lawrence Lowlands, Québec, Canada: Part 1 - Laboratory measurements. Greenhouse Gases: Science and Technology , vol. 7 , nº 4. p. 602-612. DOI: 10.1002/ghg.1671.

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Résumé

Deployment of carbon capture and storage on a large scale poses many challenges. One is the availability of reservoirs with suitable characteristics (high porosity and permeability, matched large emitters, etc.). Such a challenge might lead to the selection of reservoirs with relatively low porosity. In those environments, the rock matrix is often stiff and questions arise regarding the capabilities of seismic methods to monitor CO₂ injection. In this paper, a series of ultrasonic measurements were performed under various pressure and temperature conditions to test the seismic response of two low‐porosity reservoir samples of the St Lawrence Lowlands sedimentary basin to different CO₂ phases. Results show that the P‐wave velocity and amplitude can be used to detect the phase transition. Illustrative modeling of seismic reflectivities within a hypothetical geological formation with physical properties equal to that of the St Lawrence Lowlands sedimentary basin, suggests that a CO₂ liquid‐water contact is a potentially good seismic reflector.

Type de document: Article
Mots-clés libres: sequestration; rock physics; ultrasonic measurements
Centre: Centre Eau Terre Environnement
Date de dépôt: 28 nov. 2018 15:53
Dernière modification: 28 nov. 2018 15:53
URI: http://espace.inrs.ca/id/eprint/7727

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