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| Titel |
Numerical Approaches to CO2-Sequestration in a Faulted and Low-Permeable Saline Aquifer in NW Germany |
| VerfasserIn |
M. W. Wuttke, C. M. Sperber |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250063086
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| Zusammenfassung |
| Stabilisation at an atmospheric CO2-concentration of 450 ppm (associated with a maximum
global temperature increase of 2°C) requires radical measures. Storage of CO2 in deep
saline aquifers offers a quick and economic solution. In the EU-project MUSTANG (A
Multiple Space and Time scale Approach for the quantification of deep saline formations for
CO2 storage), a number of test sites exhibiting a wide range of reservoir properties are
investigated for the suitability to CO2-sequestration.
In this study a particular sandstone reservoir in NW Germany is investigated. This
reservoir is complex for a combination of geological features such as its great depth of the
targeted saline aquifers of about 3800 m, its structural context of being affected by a complex
deep cutting inversion structure, its low permeability of about 1 mD and being
surrounded by a large number of wells due to extensive oil and gas exploration within the
area.
In this study the effects of CO2-injection into such a tight reservoir are simulated. Two
strategies are simulated employing the TOUGH2 code: (1) an injection-relaxation and (2) an
injection-production combination. While the latter strategy dominates over the former the
model clearly indicates that both the strategies are uneconomical due to small CO2-injection
rates or amounts which can be accomodated. |
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