Laboratory study of the influence of changing the injection rate on P-wave velocities and water saturation in a Limestone
Forced imbibition was performed in a Limestone Savonnieres by injecting water into a dry sample. The injection was monitored with X-ray Computed Tomography (CT) and active ultrasonic measurements so that the time-space distribution of the invading fluid could be simultaneously observed in CT images...
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| Format: | Conference Paper |
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CSIRO
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/41365 |
| _version_ | 1848756125515644928 |
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| author | Lopes, Sofia Lebedev, Maxim |
| author2 | CSIRO |
| author_facet | CSIRO Lopes, Sofia Lebedev, Maxim |
| author_sort | Lopes, Sofia |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Forced imbibition was performed in a Limestone Savonnieres by injecting water into a dry sample. The injection was monitored with X-ray Computed Tomography (CT) and active ultrasonic measurements so that the time-space distribution of the invading fluid could be simultaneously observed in CT images and quantified through measuring P-wave velocities and water saturation. The CT scans allowed us to observe a water front advancing away from the area of injection and estimate saturation. Through the evolution of P-wave velocities, we observed a strong influence on the acoustic response with the presence of water and with the changing of injection rates. The approaching of the water front to the monitored position decreased P-wave velocities while the saturation increased continuously. The P-wave velocities decrease occurred for a short period of time and was followed by a sharp increase which happens when the fluid front crossed the monitored position. Decreasing injection rate decreased P-wave velocities and saturation. Increasing injection rate, increased P-wave velocities and saturation, sharply and for a short period of time followed by a slight decrease for P-wave velocities and a continuous increase. Our experimental data confirms how sensitive acoustic waves are to the presence of water and that changing injection rates promote considerable fluid distribution that is drastically reflected in the acoustic velocities. |
| first_indexed | 2025-11-14T09:07:14Z |
| format | Conference Paper |
| id | curtin-20.500.11937-41365 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:07:14Z |
| publishDate | 2012 |
| publisher | CSIRO |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-413652017-09-13T14:11:36Z Laboratory study of the influence of changing the injection rate on P-wave velocities and water saturation in a Limestone Lopes, Sofia Lebedev, Maxim CSIRO Acoustic Monitoring Rock Physics Limestone X-ray Computed Tomography Imbibition Forced imbibition was performed in a Limestone Savonnieres by injecting water into a dry sample. The injection was monitored with X-ray Computed Tomography (CT) and active ultrasonic measurements so that the time-space distribution of the invading fluid could be simultaneously observed in CT images and quantified through measuring P-wave velocities and water saturation. The CT scans allowed us to observe a water front advancing away from the area of injection and estimate saturation. Through the evolution of P-wave velocities, we observed a strong influence on the acoustic response with the presence of water and with the changing of injection rates. The approaching of the water front to the monitored position decreased P-wave velocities while the saturation increased continuously. The P-wave velocities decrease occurred for a short period of time and was followed by a sharp increase which happens when the fluid front crossed the monitored position. Decreasing injection rate decreased P-wave velocities and saturation. Increasing injection rate, increased P-wave velocities and saturation, sharply and for a short period of time followed by a slight decrease for P-wave velocities and a continuous increase. Our experimental data confirms how sensitive acoustic waves are to the presence of water and that changing injection rates promote considerable fluid distribution that is drastically reflected in the acoustic velocities. 2012 Conference Paper http://hdl.handle.net/20.500.11937/41365 10.1071/ASEG2012ab083 CSIRO restricted |
| spellingShingle | Acoustic Monitoring Rock Physics Limestone X-ray Computed Tomography Imbibition Lopes, Sofia Lebedev, Maxim Laboratory study of the influence of changing the injection rate on P-wave velocities and water saturation in a Limestone |
| title | Laboratory study of the influence of changing the injection rate on P-wave velocities and water saturation in a Limestone |
| title_full | Laboratory study of the influence of changing the injection rate on P-wave velocities and water saturation in a Limestone |
| title_fullStr | Laboratory study of the influence of changing the injection rate on P-wave velocities and water saturation in a Limestone |
| title_full_unstemmed | Laboratory study of the influence of changing the injection rate on P-wave velocities and water saturation in a Limestone |
| title_short | Laboratory study of the influence of changing the injection rate on P-wave velocities and water saturation in a Limestone |
| title_sort | laboratory study of the influence of changing the injection rate on p-wave velocities and water saturation in a limestone |
| topic | Acoustic Monitoring Rock Physics Limestone X-ray Computed Tomography Imbibition |
| url | http://hdl.handle.net/20.500.11937/41365 |