Critical review of mutual diffusion coefficient measurements for liquid solvent + bitumen/heavy oil mixtures
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Bibliographic record
Abstract
Information about diffusion in solvent + bitumen/heavy oil mixtures is useful for the design of solvent‐assisted recovery processes as a key parameter in reservoir simulation models. Reliable mutual diffusion coefficient measurements for these systems present significant challenges. In this article, experimental techniques for the study of diffusion in liquid solvent + bitumen/heavy oil systems are critically reviewed, and the strengths and weaknesses of each method are highlighted. Despite considerable progress in this area with the application of state‐of‐the‐art techniques, such as X‐ray computer‐assisted tomography measurements, additional work is needed to measure the composition profiles in these opaque systems more precisely and to analyse the measured concentration profiles more conveniently.
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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 | 0.001 | 0.005 |
| 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 | 0.001 | 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 it