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| Titel |
The Impact of CO2-SO2 - Brine - Reservoir Rock Interactions on Petrophysical Properties. |
| VerfasserIn |
Juliane Kummerow, Erik Spangenberg, Ronny Giese |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250051217
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| Zusammenfassung |
| In this study we evaluate the impact of impure CO2 on possible CO2 repositories (Buntsandstein, Stuttgart Formation). We present experimental petrophysical data of the simulated injection of pure CO2 and CO2 and co-contaminant SO2 into saline aquifers under realistic pressure and temperature conditions. We investigate 6 sandstones from different German localities, representing lower and upper Triassic and lower Cretaceous sedimentary basin formations. Our long-term experimental flow assembly is designed for a maximum pressure of 600 bar at a maximum working temperature of 150°C. The internal set-ups allow for the determination of P and S wave velocities, electrical conductivity and permeability of samples of 30 mm in diameter and 60 mm in length. Long-term (several weeks) exposure experiments with pure CO2 reveal no significant changes in the petrophysical properties (electrical resistivity, elastic wave velocity, permeability). In contrast, for the injection of CO2 and co-contaminant SO2 (1 vol-%) we have observed significant and irreversible changes of all monitored physical parameters. |
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