Notice bibliographique
Résumé
Just below the 60th parallel and well above the 40th parallel there is a place where bird watchers, First Nation peoples, and "Big Oil" mingle. What would otherwise be considered unlikely is relative in this land where sand dunes exist in tandem with wetlands and a boreal forest, and cold snaps bring temperatures to −40°F. The Canadian landscape just south of the Northwest Territory is a nature artist's study in the unlikely. It is here, in the northern city of Fort McMurray, that oil companies—small and large, state-owned and independent—are strategically flocking into a fast-changing energy landscape. In the 1990s, when oil was trading at U.S. $12/bbl, it was unlikely that Canada would witness such a rapid step-up in heavy-oil and oil-sands development. Now conventional oil is on its way to being displaced by synthetic crudes built by 19 separate heavy-oil streams currently being marketed out of western Canada (Fig. 1). Oil sands now account for 39% of Canada's total oil production at approximately 1 million BOPD. By 2020, production could grow to 4 million BOPD. No Longer a Footnote Alberta's oil-sands deposits contain one-third of all known oil reserves in the world, according to the Oil Sands Discovery Center, and are one of the few remaining developments still open to private investment (Fig. 2). The most northerly dune complex in the world exists in Canada; the dunes can reach 35 m in height. Beneath these dunes lies a small percentage of Canada's heavy oil. The largest percentage of heavy-oil reserves lies beneath muskeg, either close enough to the surface to be mined economically by removing the overburden or deeply buried but recoverable by steam-injection methods. The reserves found in three Alberta deposits—Athabasca (40 000 km2), Cold Lake (22 000 km2), and Peace River (8 000 km2)—contain resources that could supply Canada's energy needs for more than 475 years, or total world needs for up to 15 years. With improvements in technology and commercial viability, the production potential of all the oil-sand deposits could be as high as 2.5 trillion bbl of bitumen. The Athabasca deposit, twice the size of Lake Ontario, is estimated at a minimum of 1.6 trillion bbl of bitumen in place. Extraction is not an easy process from the technological perspective, and the environmental perspective is also particularly challenging. The Athabasca oil sands are located in wetland and boreal forest ecosystems, and they are extraordinarily diverse biologically. The forest is home to more than 300 plant species, of which 42 are rare, and 10 are not found anywhere else. The boreal forest is also home to 30 species of wood warblers. The Alberta government calculates that, at today's prices using current technology, approximately 175 billion bbl of crude bitumen is economically recoverable from the three Alberta oil-sands areas. Approximately 315 billion bbl is ultimately recoverable with technological advances. Oil-laden sand may provide a bridge between the hydrocarbon era and future energy forms, so much so that oil-sands production is expected to quickly double during this second growth wave. By 2015, oil-sands production is expected to triple, which will make Canada the fifth-largest producer in the world.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».