Offshore Nova Scotia Play Fairway Analysis: 2D Basin Modeling Results
Bibliographic record
Abstract
Abstract This paper presents part of the modeling results obtained in the Play Fairway Analysis project launched in 2009 by OETRA that consists of an integrated geosciences approach in a collaborative program between academy and industry institutions. A 210 km long depth-migrated seismic line (NovaSPAN 1400) was interpreted in age, paleo-environments and lithology. The structural evolution was reconstructed to constrain the backstripping. Two major source rocks, Late Jurassic marine type II and Early Cretaceous terrestrial type III were identified from pyrolysis analyses. A third type II source, of Early Jurassic age has been inferred from the presence of Gammacerane biomarkers in the Venture B13 condensates, which were correlated with Pliensbachian source rocks and oils from the conjugate margin in Morocco and Portugal. The interpreted section displays 3 structural domains: the little deformed shelf area, the strongly disturbed bathyal domain with complex salt tectonics structures and the flat lying strata domain of the abyssal plain. Modeling results show that the Early Jurassic and Late Jurassic sources are presently in the gas and oil window respectively. Early cretaceous is immature. Expulsion and entrapment occurred lately and first significant accumulations appeared during the Cretaceous (about 80 Ma ago) and are still active today. Three potential plays can be considered for exploration:Late Jurassic carbonate bank with a risk of biodegradation due to low Present temperature (around 60°C);Early Jurassic carbonate ramp along the northern salt basin boundary,Hypothetical turbiditic sands in the Early Cretaceous (Logan Canyon equivalent)
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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 | 0.001 |
| 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".