Experimental Study on the Phase Behavior and Fluid Physical Parameters of High CO2-Content Natural Gas
Bibliographic record
Abstract
The JEFRI-PVT apparatus from DBR Company of Canada was used to test the phase transition from well bottom to well head and the physical parameters of high CO2-bearing natural gas,such as compressibility factor(Z-factor),formation volume factor(FVF),compressibility,and density.The experimental results show that no phase transition can be defined at experimental ranges,and with pressure rising,the Z-factor decreases and then increase(the minimal value appears at about 15 MPa),the density rises and both FVF and compressibility decrease(the decreasing amplitude at low pressure is larger than that at high pressure);with CO2 content increasing,the Z-factor decreases and the density increases(the increasing amplitude at high pressure is more obvious than that at low pressure),and both FVF and compressibility have little change;with temperature rising,the Z-factor increases(the biggest change arrives at about 15 MPa),the FVF rises(the increasing amplitude at low pressure is more obvious than that at high pressure),the density decreases(the decreasing amplitude at high pressure is more obvious than that at low pressure),and compressibility has little change.
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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) | 0.001 | 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 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".