Impacts on SRV Region in Low-Permeability Formations Due Stressse Around a Hydraulic Fracture
Bibliographic record
Abstract
Abstract Stresses induced near a hydraulic fracture are calculated in an elastoplastic Mohr-Coulomb type formation. While an effective compressive stress increase may reduce the permeability in the formation, the induced shear stresses and dilatant zone developed can increase the stimulated reservoir volume (SRV) and the size of an enhanced permeability zone. Therefore, the induced shear stresses and dilatant zone are used in this article in order to quantify the size of the SRV. It is emphasized that when the SRV can be characterized by elastic strains generated during a fracturing process, this reversible SRV may not be maintained during production. It is those irreversible SRV (ISRV) or dilatant volumetric strains that are the key for producing low-permeability reservoir economically. It is suggested therefore that a production enhancement in these formations is dominated by the possible ISRV which are quantified by the cohesion, the orientation of the natural fracture network and in-situ stress ratios.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".