Conventional oil petroleum system of the Cenomanian - Turonian Blackstone Formation, Ferrier - Willesden Green - Gilby area, west-central Alberta
Bibliographic record
Abstract
Summary The Cretaceous (Cenomanian - Turonian) Blackstone Formation of the Colorado Group in west-central Alberta represents a self-sourced petroleum system with proved light oil production. Although a high-resolution allostratigraphic framework for the Upper and Lower Colorado Group of the foredeep of the Western Canada Sedimentary Basin is documented (Tyagi et al, 2007), the understanding of the Blackstone carbonaceous mudstones in the context of a self-sourced petroleum system remains rudimentary. The Second White Specks light oil play is hosted within heterolithic carbonaceous mudstone reservoirs of the Blackstone Formation in the central region of a 110 township project area (Twp. 35-45, Rge. 1-10 W5) of westcentral Alberta . Historically, exploration results in this play have been inconsistent. The research goal is to characterize the burial history and reservoir properties of this organic-rich mudstone reservoir in order to develop a process-based petroleum system model. The resulting model is intended to provide guidance for exploration and development of a large conventional oil resource play hosted in “hybrid” carbonaceous silty mudstone reservoirs. The Second White Specks petroleum system model is constrained by a high-frequency allostratigraphic framework constructed using a subsurface dataset of over 2200 wells. Available cores in the Blackstone Formation have been sampled at closely-spaced regular intervals for Rock Eval pyrolysis analyses, supplementing a regional dataset of legacy Rock Eval data. Petromod petroleum system analysis will be integral to modeling the timing and extents of the system. The resulting data is integrated into a reservoir characterization workflow (Cheadle, 2011) which aids in prospect identification.
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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 | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".