Adding Value to Alberta's Oil Sands
Notice bibliographique
Résumé
Abstract A rapidly expanding oil sands industry and a dwindling supply of feedstock for Alberta's ethane-based petrochemical industry have stimulated interest in evaluating bitumen for producing a broad slate of refined products, including petrochemicals. Two industry/government studies evaluated different process schemes for integrating oil sands, refining, and petrochemical operations and convert heavy gas oils into both refined products and petrochemicals. Since market demand for fuels and refined products far exceeds that for petrochemicals, the performance characteristics of the heavy oil conversion processes are important to optimize the volume ratios of the products to meet market volume demands. The paper reviews different heavy oil processing technologies focusing on olefin to fuel product ratios and flexibility to change these ratios. The review includes conventional noncatalytic thermal (steam) cracking, as well as catalytic processes. These technologies are at different stages of commercial development for production of fuels and olefins, and must be evaluated and adapted to meet Alberta's aromatic bitumen-derived heavy gas oils. Work is underway in an industry/government study towards developing an integrated process for the combined production of refined fuels and petrochemical feedstocks. In addition, two workshops were held in February 2005 to address the business and regulatory gaps that needed to be addressed before such a process can be commercialized; the results from the workshops will also be discussed in the paper. Introduction Alberta has an enviable position as a North American energy hub, providing oil and gas to United States markets through an extensive pipeline network. In addition to conventional oil and gas, Alberta has large reserves of coal and coal bed methane, as well as the massive oil sands deposits that underlie 140,800 square kilometres of the province. The oil sands have outstripped conventional oil reservoirs as the primary source of oil in the province. According to the Alberta Department of Energy, production of bitumen and synthetic crude oil was close to 158,987.3 million m3/d (one million BPD) in 2003, as opposed to 100,162 m3/d (630,000 BPD) of conventional oil production. If all new projects, and expansions to existing projects currently planned, take place as scheduled, Alberta's bitumen production is expected to triple by the year 2030. However, the continued expansion of Alberta's oil sands faces significant challenges. Diluent availability is already a problem, water use is facing restrictions, and natural gas is becoming more costly and less available. A further problem is the ability of Canadian and U.S. markets to absorb additional bitumen and synthetic crude production. Refineries in the U.S. Midwest (PADD II), which is the largest traditional market for oil sands products, cannot process the projected increase of heavy feedstock without additional residual upgrading capacity. The alternative is to build upgrading capacity in Alberta, which could increase production costs and make Alberta crude less competitive in the export market. Natural gas cost and availability is an issue for more than the oil sands industry.
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Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,002 | 0,002 |
| Études des sciences et des technologies | 0,003 | 0,002 |
| Communication savante | 0,006 | 0,001 |
| Science ouverte | 0,001 | 0,002 |
| Intégrité de la recherche | 0,001 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,019 | 0,002 |
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 source (Gemma direct ou Codex distillé), 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 ».