Petroleum resource potential of the Laurentian Channel area of interest, Atlantic Margin of Canada
Bibliographic record
Abstract
The conventional and unconventional oil and gas resource potential in the Laurentian Channel area of interest on the Atlantic margin of Canada is described in this report. The area of interest (AOI) encompasses approximately 16,000 square kilometres of the Laurentian Channel located offshore of Nova Scotia and Newfoundland (Fig. 1). Parts of two major sedimentary basins (Sydney Basin and Scotian (Orpheus Graben); Fig. 2) occur within the AOI, both of which have conventional oil and gas potential. Quantitative assessments of petroleum potential for the Laurentian Channel AOI include high-confidence estimates of 40.8 x 106 m3 (257 MMbbls) of oil and 113.1 x 109 m3 (4.0 Tcf) of gas, and speculative estimates of 302.2 x 106 m3 (1901 MMbbls) of oil and 432.7 x 109 m3 (15.3 Tcf) of gas (mean values of inplace volumes). The petroleum resource estimates are based on a modified areal apportionment of resource potential of previously defined conventional petroleum plays. The high-confidence and speculative estimates reflect two resource distribution scenarios; the high-confidence estimates assume the largest oil or gas fields occur outside the AOI, and the speculative estimates assume the largest fields are located within the AOI. In the speculative resource scenario, the AOI may contain fields with in-place volumes of 76.2 x 106 m3 (479 MMbbls) of oil and 88.2 x 109 m3 (3.1 Tcf) of gas. The Laurentian Channel AOI encloses areas of varying prospectivity for conventional petroleum resource. Areas of high to moderate petroleum potential occur in the northern portion of the AOI, where Lower and Upper Carboniferous petroleum plays are present in the Sydney Basin. An area of high potential for petroleum occurs in the southern portion of the AOI, where numerous stacked petroleum plays occur in the thick Mesozoic-Cenozoic succession of the Orpheus Graben. Small areas of low potential for petroleum are mapped in the northwestern and central AOI, where thin sections of Carboniferous and Mesozoic strata are found on the margins of Sydney Basin and Burin Platform. Unconventional coal-bed methane and gas hydrate resources may occur within the Laurentian Channel AOI. Coal-bed methane potential within the AOI is estimated at 45.5 x 109 m3 (1.6 Tcf). Estimates for gas hydrate potential in the AOI vary from 7.1 x 1011 m3 to 2.9 x 1012 m3 (25 to 102 Tcf). Although gas hydratevolumes may be substantial, technical and economic factors limit the potential for development of gas hydrate resources, much more so than for conventional oil or gas resources.
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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 | 0.002 | 0.002 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.002 | 0.000 |
| Open science | 0.000 | 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".