Finite Element Simulation of Casing Shearing Impairment in Different Cementing Method
Bibliographic record
Abstract
Casing impairment in Sazhong block, Daqing oilfield is serious recently. Most of casing failure type is casing shear slip in Nen’er marker layer where a part of well did not cemented. It has a great influence on stress and deformation in the progress of casing shear if the marker bed cemented or not. This paper considered the casing and rock mechanics characteristic after yield, established finite element models to analyze the casing reaction force in the progress. Result shows that stress and deformation of casing is lager than that of side wall rock in two models. In the uncemented well, there is a space between the casing and wellbore. The space can be regard as a buffer room for the formation slip. Uncemented condition is conducive to prevent and repair casing shear failure in marker bed. Key words: Finite element; Casing impairment; Shearing failure; Daqing oilfield; Maker layer
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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".