Cyclic Gas Injection in Low-Permeability Oil Reservoirs: Progress in Modeling and Experiments
Bibliographic record
Abstract
Summary Cyclic gas injection effectively enhances oil recovery for low-permeability oil reservoirs. Numerous theoretical, mathematical, and laboratory investigations have attempted to unlock underlying recovery mechanisms and optimal design for the cyclic gas injection in these reservoirs. While these investigations have shed light on various aspects of the process, different descriptions of key recovery mechanisms and optimal design parameters can be found in the literature. Many of these published studies consider conventional approaches and concepts, such as assuming advection-dominated fluid flow and mixing between injected gas and oil within the matrix, to simulate the process or conduct experiments. Under different reservoir and operational conditions, to be reviewed, one or a combination of mechanisms can be responsible for improving oil recovery. This review aims to critically examine the published modeling and experimental studies regarding the recovery mechanisms of gas cyclic injection and the conditions under which the process can enhance oil recovery. The review will identify lessons learned and areas in need of further research.
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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 | 0.001 |
| 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".