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Time-lapse full-waveform inversion of limited-offset seismic data using a local migration regularization
| Content Provider | Semantic Scholar |
|---|---|
| Author | Raknes, Espen Birger Arntsen, Børge |
| Copyright Year | 2014 |
| Abstract | Conventional methods for quantifying time-lapse seismic effects rely on a linear assumption that is easily violated. Therefore, more sophisticated methods are necessary. The full-waveform inversion (FWI) method is an inverse method that is able to reveal time-lapse changes in the image domain, in which the conventional methods break down. We investigated the behavior of FWI using different approaches for applying FWI on limited-offset time-lapse data. We compared acoustic and elastic inversion schemes. We introduced a method for constraining the model update for the monitor model to remove time-lapse artifacts. This method was based on migration of the residuals in the time-lapse data, which, in combination with a local contrast estimation algorithm, formed the update constraint. We found that for limited-offset data, elastic theory was necessary for the success of FWI and that FWI was able to quantify the time-lapse changes in the parameter models. The local migration regularization approach was able to remove time-lapse artifacts. |
| File Format | PDF HTM / HTML |
| DOI | 10.1190/geo2013-0369.1 |
| Volume Number | 79 |
| Alternate Webpage(s) | http://www.ipt.ntnu.no/msim/lib/exe/fetch.php?media=raknes2014.pdf |
| Alternate Webpage(s) | http://www.ipt.ntnu.no/~barn/Myarticles/Raknes2014.pdf |
| Alternate Webpage(s) | https://doi.org/10.1190/geo2013-0369.1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
