Simulation Study of the Toe-to-Heel Air Injection Three-Dimensional Combustion Cell Experiment and Effects in the Mobile Oil Zone
Bibliographic record
Abstract
Conventional in situ combustion (ISC) has largely failed to establish itself as a major heavy oil recovery process. However, the recent successful field piloting of the toe-to-heel air injection (THAI) process by Petrobank, in the Athabasca oil sands, Conklin, Alberta, Canada, seems set to develop a major new era of ISC technology. A new numerical model of the THAI–ISC process has been developed, using three-dimensional combustion cell data in conjunction with Phillips thermal cracking kinetics. Excellent agreement was obtained between the simulation predictions and a number of measured dynamic parameters, including the oil production rate. The fine-scale predictions have enabled new insights into the operation of the process, especially concerning the important mobile oil zone (MOZ) from which partially upgraded oil is produced. The properties of the MOZ not only affect oil production but also determine to what extent further in situ upgrading of the bitumen is possible using the catalytic THAI–CAPRI process.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| 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".