Fracture Mapping in the San Juan Basin, New Mexico
Bibliographic record
Abstract
Abstract An infill drilling pilot test in the Lewis, Mesaverde and Dakota formations of the San Juan Basin, New Mexico, included microseismic and tiltmeter monitoring of fracture stimulations. This study looks at microseisms from eight stages in two wells using an 18-tool stacked toolstring and surface tiltmeter measurements of 23 stages in six wells, (including the microseismic wells), using a 63-site tiltmeter array. A pressure observation well also situated within the pilot area, provided key information to the interpretation of data from the Lewis fracture stages. Complex (dendritic) fracture growth observed in the Lewis formation may be controllable through modification of the injection rate. Lower injection rates encourage simple planar growth and control fracture-height growth. Shorter fracture half-lengths were observed in the lower Mesaverde stages, leading to a redesign that is currently being tested in the field. The average fracture azimuth measured in this project, N21°E, confirmed the current understanding of the stress orientation in this part of the San Juan Basin and provided confidence regarding additional infill well placement.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 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) | 0.001 | 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".