Time-lapse seismic signal analysis for enhanced oil recovery at Cranfield CO2 sequestration site, Cranfield field, Mississippi
The Cranfield field in southwest Mississippi has been under continuous Formula injection by Denbury Onshore LLC since 2008. Two 3D seismic surveys were collected in 2007 and 2010. An initial 4D seismic response was characterized after three years of injection, where more than three million tons of F...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
SOC EXPLORATION GEOPHYSICISTS
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/44262 |
| _version_ | 1848756949051506688 |
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| author | Ditkof, J. Caspari, E. Pevzner, Roman Urosevic, Milovan Meckel, T. Hovorka, S. |
| author_facet | Ditkof, J. Caspari, E. Pevzner, Roman Urosevic, Milovan Meckel, T. Hovorka, S. |
| author_sort | Ditkof, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The Cranfield field in southwest Mississippi has been under continuous Formula injection by Denbury Onshore LLC since 2008. Two 3D seismic surveys were collected in 2007 and 2010. An initial 4D seismic response was characterized after three years of injection, where more than three million tons of Formula remain in the subsurface. This interpretation showed coherent seismic amplitude anomalies in some areas that received large amounts of Formula but not in others. To understand these effects better, we performed Gassmann substitution modeling at two wells: the 31F-2 observation well and the 28-1 injection well. We aimed to predict a postinjection saturation curve and acoustic impedance (AI) change through the reservoir. Seismic volumes were cross-equalized, well ties to seismic were performed, and AI inversions were subsequently carried out. Inversion results showed that the change in AI is higher than Gassmann substitution predicted for the 28-1 injection well. The time-lapse AI difference predicted by the inversion is similar in magnitude to the difference inferred from a time delay along a marker horizon below the reservoir. |
| first_indexed | 2025-11-14T09:20:19Z |
| format | Journal Article |
| id | curtin-20.500.11937-44262 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:20:19Z |
| publishDate | 2013 |
| publisher | SOC EXPLORATION GEOPHYSICISTS |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-442622017-09-13T14:29:23Z Time-lapse seismic signal analysis for enhanced oil recovery at Cranfield CO2 sequestration site, Cranfield field, Mississippi Ditkof, J. Caspari, E. Pevzner, Roman Urosevic, Milovan Meckel, T. Hovorka, S. The Cranfield field in southwest Mississippi has been under continuous Formula injection by Denbury Onshore LLC since 2008. Two 3D seismic surveys were collected in 2007 and 2010. An initial 4D seismic response was characterized after three years of injection, where more than three million tons of Formula remain in the subsurface. This interpretation showed coherent seismic amplitude anomalies in some areas that received large amounts of Formula but not in others. To understand these effects better, we performed Gassmann substitution modeling at two wells: the 31F-2 observation well and the 28-1 injection well. We aimed to predict a postinjection saturation curve and acoustic impedance (AI) change through the reservoir. Seismic volumes were cross-equalized, well ties to seismic were performed, and AI inversions were subsequently carried out. Inversion results showed that the change in AI is higher than Gassmann substitution predicted for the 28-1 injection well. The time-lapse AI difference predicted by the inversion is similar in magnitude to the difference inferred from a time delay along a marker horizon below the reservoir. 2013 Journal Article http://hdl.handle.net/20.500.11937/44262 10.1190/INT-2013-0056.1 SOC EXPLORATION GEOPHYSICISTS restricted |
| spellingShingle | Ditkof, J. Caspari, E. Pevzner, Roman Urosevic, Milovan Meckel, T. Hovorka, S. Time-lapse seismic signal analysis for enhanced oil recovery at Cranfield CO2 sequestration site, Cranfield field, Mississippi |
| title | Time-lapse seismic signal analysis for enhanced oil recovery at Cranfield CO2 sequestration site, Cranfield field, Mississippi |
| title_full | Time-lapse seismic signal analysis for enhanced oil recovery at Cranfield CO2 sequestration site, Cranfield field, Mississippi |
| title_fullStr | Time-lapse seismic signal analysis for enhanced oil recovery at Cranfield CO2 sequestration site, Cranfield field, Mississippi |
| title_full_unstemmed | Time-lapse seismic signal analysis for enhanced oil recovery at Cranfield CO2 sequestration site, Cranfield field, Mississippi |
| title_short | Time-lapse seismic signal analysis for enhanced oil recovery at Cranfield CO2 sequestration site, Cranfield field, Mississippi |
| title_sort | time-lapse seismic signal analysis for enhanced oil recovery at cranfield co2 sequestration site, cranfield field, mississippi |
| url | http://hdl.handle.net/20.500.11937/44262 |