An Investigation of the Plugging Mechanisms in a Slotted Liner from the Steam Assisted Gravity Operations
Bibliographic record
Abstract
Abstract A slotted liner recovered from the well 07P05 located in the McMurray formation of the Long Lake area, Canada, where Nexen Inc. is producing bitumen with the Steam Assisted Gravity Drainage (SAGD) technology, was investigated in the study. The study was aimed to determine the conditions of the liner and assist Nexen in identifying the mechanisms of the liner failure. The study included a physical examination of the liner, direct measurements of the liner aperture, permeability measurements, epoxy impregnation of the selected sections of the liner, and the analysis of plugging material and surface of slots. The study results show the corrosion and/or plugging and/or poor slot specification result in effective apertures being different than the specification. The study also shows that pressure drops across the liner sections are small, likely due to removal of the surface plugging clay and fines. The plugging material consists of large amount of corrosion products, significant amount of iron sulphide, clay fines (mostly kaolinite), and some quartz grains. The examination of the slots show that films of the plugging material consisting of predominantly corrosion products and clay, gradually choking slots.
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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) | 0.000 | 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".