Effectiveness of seismic detection modelling for CO2 migration scenarios near the Aquistore CO2 injection site, Estevan, Saskatchewan, Canada
Bibliographic record
Abstract
The Aquistore site is a proposed CO2 injection site located near Estevan, Saskatchewan, Canada, where CO2 will be stored in a saline aquifer at a depth of approximately 3000 m. This study used fluid replacement modelling to simulate the effects of CO2 migration from the injection interval into overlying saline aquifers. The objective was to discover whether or not, and to what degree, seismic surveys could resolve the presence of CO2 above the injection interval. Log data from a nearby well were analyzed to investigate the effects of adding CO2 on various physical properties of the subsurface. Two sets of synthetic seismic traces — with and without CO2 present — were compared. Differences in traveltimes through aquifer units were also compared before and after CO2 replacement. Results suggest that seismic monitoring at the Aquistore site would be more effective for the detection of CO2 migrating in shallow aquifers than in aquifers near the base of the Williston basin.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".