Characterizing the elastic properties and seismic signature of a heavy oil sand reservoir: Manitou Lake, Saskatchewan
Bibliographic record
Abstract
A suite of well logs from the Manitou Lake heavy oil field in Saskatchewan were analyzed to study the effect of lithology and saturating fluid on density and P- and S-wave velocities in the sand reservoirs. The Vp values do not change significantly from shale to sand, but the shear-wave velocity increases significantly from 800 to 1300 m/s. A Vp/Vs value lower than 2.15 indicate sand reservoirs. Within the target zone, densities lower than 2250 kg/m3 indicate sands. Modeling with the log response equation shows improvement in density estimations in comparison to using Gardner's relation. PP and PS synthetics show an opposite seismic signature at the top of the reservoir, seen as a trough on the PP section and as a peak in the PS section, making registration between the two sections more complex. Bright spots are expected on the PS section where sand is present.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.003 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".