Gas Generation during Electrical Heating of Oil Sands
Bibliographic record
Abstract
Electrical heating of oil sand formations involves high temperatures, which can lead to in-situ gas generation as a result of aquathermolysis and thermal cracking of bitumen. The thermal cracking of bitumen can also lead to formation of coke at higher temperatures. Prediction of the volume of the produced gas and coke is very important in design and implementation of thermal processes dealing with high temperatures such as electrical heating and steam assisted gravity drainage with addition of oxygen. In this work a reaction kinetics model has been developed based on the experimental data of in-situ gas generation from an Athabasca bitumen sample. The kinetic parameters were estimated using the experimental data in the temperature range 360–420 °C. The results show that coke formation can be significant at higher temperatures. An important observation was that a plateau to H 2 S production is not expected at higher temperatures. In addition, the results show that operation at 370 °C produces a gaseous composition that minimizes the volume of the produced gas at the surface. A simple scaling analysis is presented that allows clarification of the scatter that has been observed in the reported produced hydrogen sulfide versus the operation temperature. The developed model provides a useful tool for the estimation of produced gas composition during thermal recovery processes.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".