Integrated monitoring of the CO2 Storage Ketzin using a structure-based combination of seismics and geoelectrics
Geophysical monitoring at the CO2 pilot storage Ketzin comprises time-lapse seismic and geoelectric (ERT) measurements. Both types of measurements are known to image geological structures differently, in particular for a variable saturation of CO2. We present a combination of both methods by means o...
| Main Authors: | , , , , , , , |
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| Format: | Conference Paper |
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European Association of Geoscientists and Engineers, EAGE
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/13936 |
| _version_ | 1848748483466493952 |
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| author | Bergmann, P. Ivandic, M. Kiessling, D. Rücker, C. Schmidt-Hattenberger, C. Lüth, S. Juhlin, Christopher Norden, B. |
| author_facet | Bergmann, P. Ivandic, M. Kiessling, D. Rücker, C. Schmidt-Hattenberger, C. Lüth, S. Juhlin, Christopher Norden, B. |
| author_sort | Bergmann, P. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Geophysical monitoring at the CO2 pilot storage Ketzin comprises time-lapse seismic and geoelectric (ERT) measurements. Both types of measurements are known to image geological structures differently, in particular for a variable saturation of CO2. We present a combination of both methods by means of a structural constrained inversion approach. Structural constraints are implemented in the geoelectric inversion by a local regularization. This allows model parameters to behave discontinuously across prominent geological boundaries. A tetrahedral finite-element parametrization is used to closely follow geometric a priori structures interpreted from seismic reflection data. Thus, seismics and geoelectrics are arranged in a sequential workflow which is based on a structural similarity. Practical application is performed on the Ketzin datasets which comprise repeated 3D seismic surveys, as well as repeated surface-downhole geoelectric surveys, providing different illumination/coverage and time-lapse signals. However, application of a local regularization for the caprock-reservoir boundary yields a more consistent image and reduces some of the ill-posedness in the ERT inversion. We compare the result with that of an unconstrained inversion and discuss its potential for CO2 migration imaging. |
| first_indexed | 2025-11-14T07:05:46Z |
| format | Conference Paper |
| id | curtin-20.500.11937-13936 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:05:46Z |
| publishDate | 2012 |
| publisher | European Association of Geoscientists and Engineers, EAGE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-139362017-01-30T11:40:18Z Integrated monitoring of the CO2 Storage Ketzin using a structure-based combination of seismics and geoelectrics Bergmann, P. Ivandic, M. Kiessling, D. Rücker, C. Schmidt-Hattenberger, C. Lüth, S. Juhlin, Christopher Norden, B. Geophysical monitoring at the CO2 pilot storage Ketzin comprises time-lapse seismic and geoelectric (ERT) measurements. Both types of measurements are known to image geological structures differently, in particular for a variable saturation of CO2. We present a combination of both methods by means of a structural constrained inversion approach. Structural constraints are implemented in the geoelectric inversion by a local regularization. This allows model parameters to behave discontinuously across prominent geological boundaries. A tetrahedral finite-element parametrization is used to closely follow geometric a priori structures interpreted from seismic reflection data. Thus, seismics and geoelectrics are arranged in a sequential workflow which is based on a structural similarity. Practical application is performed on the Ketzin datasets which comprise repeated 3D seismic surveys, as well as repeated surface-downhole geoelectric surveys, providing different illumination/coverage and time-lapse signals. However, application of a local regularization for the caprock-reservoir boundary yields a more consistent image and reduces some of the ill-posedness in the ERT inversion. We compare the result with that of an unconstrained inversion and discuss its potential for CO2 migration imaging. 2012 Conference Paper http://hdl.handle.net/20.500.11937/13936 European Association of Geoscientists and Engineers, EAGE restricted |
| spellingShingle | Bergmann, P. Ivandic, M. Kiessling, D. Rücker, C. Schmidt-Hattenberger, C. Lüth, S. Juhlin, Christopher Norden, B. Integrated monitoring of the CO2 Storage Ketzin using a structure-based combination of seismics and geoelectrics |
| title | Integrated monitoring of the CO2 Storage Ketzin using a structure-based combination of seismics and geoelectrics |
| title_full | Integrated monitoring of the CO2 Storage Ketzin using a structure-based combination of seismics and geoelectrics |
| title_fullStr | Integrated monitoring of the CO2 Storage Ketzin using a structure-based combination of seismics and geoelectrics |
| title_full_unstemmed | Integrated monitoring of the CO2 Storage Ketzin using a structure-based combination of seismics and geoelectrics |
| title_short | Integrated monitoring of the CO2 Storage Ketzin using a structure-based combination of seismics and geoelectrics |
| title_sort | integrated monitoring of the co2 storage ketzin using a structure-based combination of seismics and geoelectrics |
| url | http://hdl.handle.net/20.500.11937/13936 |