Analysis of the Impact of CO<sub>2</sub> Adsorption on Rock Wettability for Geological Storage of CO<sub>2</sub>
Bibliographic record
Abstract
High Resolution Image Download MS PowerPoint Slide Wettability change of rocks under high-pressure CO 2 is analyzed for CO 2 storage assessment. Increased water contact angle (measured by the sessile drop method) with CO 2 pressure on three different rocks is related to CO 2 adsorption on the rocks using complementary experimental results of CO 2 adsorption (by gravimetric measurement) and interfacial tension between water and CO 2 (by the pendant drop method). An analysis of free energy change accompanying CO 2 adsorption on the rock surface shows that adsorbed CO 2 could result in moving the CO 2 /water/rock contact line and change the rocks from water-wet to non-water-wet, increasing the potential for CO 2 to spread and displace water. The free energy change has not been studied previously, and the results suggest that CO 2 adsorption on rocks could decrease the capillary force in geological reservoirs and enable injected CO 2 to enter a greater portion of pore space. This would significantly increase the reservoir utilization efficiency and CO 2 storage capacity.
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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 | 0.000 |
| 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) | 0.002 | 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".