Evaluation of an Advanced Metal Bonded Coating Technology for Improved SAGD Performance
Bibliographic record
Abstract
Abstract Due to the high temperature, high pressure and sophisticated chemical environment in heavy oil wells, Steam-Assisted Gravity Drainage (SAGD) is considered one of the most challenging service conditions for carbon steel equipment. This paper introduces an advanced metal-metal bonded coating technology-electroless nickel (EN) coating and its applications in SAGD operations to protect downhole equipment from fouling due to corrosion, adhesion of inorganic and organic materials as well as the impacts of wettability alteration. In the first chapter, we will describe the complex and hostile thermal-chemical environment, their impacts on the SAGD production system and the fouling causes. We will compare the performance of EN coating to that of regular carbon steel pipe in the following aspects: a) corrosion resistance in the presence of sour gases using potentiostatic and potentiodynamic polarization methods; b) adhesion of silica, bitumen coated silica using atomic force microscopy, and c) surface energy and wettability alteration using contact angle measurements. The set-up of the facility, procedures of the tests and governing science and engineering principles will be reviewed. In the end, we will introduce the results of laboratory and SAGD field experiments designed to investigate the EN coating technology in protecting the substrate materials under SAGD conditions.
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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".