 |
| Titel |
AVO studies in Ketzin to discriminate fluid saturation and pore pressure related changes in 3D time-lapse data |
| VerfasserIn |
Alexandra Ivanova, Peter Bergmann, Can Yang, Stefan Luth, Christopher Juhlin |
| Konferenz |
EGU General Assembly 2013
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250082750
|
|
|
|
|
|
| Zusammenfassung |
| 3D time-lapse seismic data were acquired at the Ketzin pilot CO2 storage site (a baseline (2005) and two repeat surveys (2009, 2012)). The CO2 injection started in 2008. Over 60 ktons of CO2 have been injected into a heterogeneous sandstones reservoir (saline aquifer) at a 650 m depth.
Surface seismic can monitor CO2 at the Ketzin site. The time-lapse seismic signature has been interpreted as an anomaly caused by fluid saturation- related changes only. But CO2 injection must always decrease effective or differential reservoir pressure, because CO2 is injected at higher pressure than the original formation pore fluid pressure. We used AVO methods of Juhling&Young (1993) and Landro (2001) to discriminate between CO2-saturation- and pore-pressure- related effects in 3D time-lapse seismic data from Ketzin. |
|
|
|
|
|
|