Induced seismicity risk in Irani oil and gas fields
Bibliographic record
Abstract
The Zagros Basin, which extends in a NW-SE orientation across southwestern Iran, is a large tectonically disturbed sedimentary basin that is oil-rich and which has an elevated natural seismicity level. Much of the region appears to be close to criticality, and anthropogenic perturbations can lead to triggering of seismic activity. This article assesses the baseline seismic rate and induced seismicity linked to oil and natural gas development activities in the reservoir structures in the Zagros Basin in the south and southwest of Iran. According to the location analyses of the earthquake data and the b-values map, some reservoirs have a particularly high b-value and these sites of concentrations of induced earthquakes were selected for further analyses. Among these selected reservoirs, Field B, one of the biggest producing oil fields located in the southwest of Iran, was studied. The injection and production history of the field is compared with the annual seismicity recorded for the field and a good correlation was found. The data are discussed in the context of criticality in the natural stress field. A few simple calculations of injection and depletion effects suggest that the seismicity field represents a valuable data source for improved geomechanics management of oil and gas production activities in critically stressed cases.
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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 | 0.001 | 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 | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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".