Full waveform inversion of time-lapse VSP data
Vertical seismic profile (VSP) is one of the technologies for monitoring hydrocarbon production and CO2 geosequestration. However, quantitative interpretation of time-lapse VSP is challenging due to its irregular distribution of source-receiver offsets. One way to overcome this challenge is to use f...
| Main Author: | |
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| Format: | Thesis |
| Published: |
Curtin University
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/79285 |
| _version_ | 1848764032178192384 |
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| author | Egorov, Anton |
| author_facet | Egorov, Anton |
| author_sort | Egorov, Anton |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Vertical seismic profile (VSP) is one of the technologies for monitoring hydrocarbon production and CO2 geosequestration. However, quantitative interpretation of time-lapse VSP is challenging due to its irregular distribution of source-receiver offsets. One way to overcome this challenge is to use full waveform inversion (FWI), which does not require regular offsets. We present a workflow of elastic FWI applied to offset vertical seismic profile data for the purpose of identification and estimation of time-lapse changes introduced by injection of 15,000 t of CO2-rich gas mixture at 1.5 km depth. Application of this workflow to both synthetic and field data shows that elastic FWI is able to detect and quantify the time-lapse anomaly in P wave velocity with the magnitude of 100–150 m/s. |
| first_indexed | 2025-11-14T11:12:54Z |
| format | Thesis |
| id | curtin-20.500.11937-79285 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:12:54Z |
| publishDate | 2018 |
| publisher | Curtin University |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-792852020-05-19T04:48:49Z Full waveform inversion of time-lapse VSP data Egorov, Anton Vertical seismic profile (VSP) is one of the technologies for monitoring hydrocarbon production and CO2 geosequestration. However, quantitative interpretation of time-lapse VSP is challenging due to its irregular distribution of source-receiver offsets. One way to overcome this challenge is to use full waveform inversion (FWI), which does not require regular offsets. We present a workflow of elastic FWI applied to offset vertical seismic profile data for the purpose of identification and estimation of time-lapse changes introduced by injection of 15,000 t of CO2-rich gas mixture at 1.5 km depth. Application of this workflow to both synthetic and field data shows that elastic FWI is able to detect and quantify the time-lapse anomaly in P wave velocity with the magnitude of 100–150 m/s. 2018 Thesis http://hdl.handle.net/20.500.11937/79285 Curtin University fulltext |
| spellingShingle | Egorov, Anton Full waveform inversion of time-lapse VSP data |
| title | Full waveform inversion of time-lapse VSP data |
| title_full | Full waveform inversion of time-lapse VSP data |
| title_fullStr | Full waveform inversion of time-lapse VSP data |
| title_full_unstemmed | Full waveform inversion of time-lapse VSP data |
| title_short | Full waveform inversion of time-lapse VSP data |
| title_sort | full waveform inversion of time-lapse vsp data |
| url | http://hdl.handle.net/20.500.11937/79285 |