Transport Behavior of Multimetallic Ultradispersed Nanoparticles in an Oil-Sands-Packed Bed Column at a High Temperature and Pressure
Why this work is in the frame
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Bibliographic record
Abstract
Water-in-vacuum gas oil microemulsion containing ultradispersed multimetallic colloidal nanoparticles can facilitate in situ delivery of nanoparticles into a heavy oil reservoir. This study investigated the transport of multimetallic nanoparticles (W, Ni, and Mo) of potential catalytic value suspended in vacuum gas oil using different oil-sands-packed bed column breakthrough experiments at a typical pressure and temperature of the steam-assisted gravity drainage (SAGD) recovery process. The nanoparticles (34 ± 0.5 nm) were transported into two different permeability oil sands. Experiments were performed at a pressure of 3.5 MPa, residence time of 36 h, and temperatures from 300 to 320 °C in both low- and high-permeability-oil-sands-packed beds. At full breakthrough, a constant normalized concentration plateau was achieved, ranging from 0.50 for low-permeability oil sands to 0.60 for high-permeability oil sands. Deposition and transport of nanoparticles were strongly dependent upon their metallic type, temperature, and porosity of oil sands. Despite aggregation of nanoparticles at a high temperature, neither major permeability reduction nor pore plugging were observed. Therefore, propagation of multimetallic ultradispersed nanoparticles in oil sands media seems feasible under a typical pressure and temperature of the SAGD process.
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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 | 0.000 | 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 it