Exploration Potential of the Deepwater Petroleum Systems of Newfoundland and Labrador Margins
Notice bibliographique
Résumé
Abstract The deep and ultra-deep water petroleum potential of the Newfoundland and Labrador (NL) is poorly documented in the literature. Only nine wells were drilled in water deeper than 500 m and only one well has been drilled as an ultradeep, >2000 m, test. However, the available seismic data shows that numerous large structural and stratigraphic traps are located on the slope and rise of the network of interconnected Mesozoic-aged rift basins, situated on the passive margin surrounding the NL continental shelf. Introduction Deepwater exploration plays in Atlantic Canada extend from the Georges Bank's slope in southern Nova Scotia, through the Scotian and Grand Banks slopes, through the Flemish Pass and into Orphan and Hopedale basins in the north (Figure 1). All these basins are situated in a divergent margin setting, similar to the Brazilian or Angolan basin margins. Until recently, the Laurentian Basin found between the Canadian provinces of Nova Scotia and Newfoundland and the French Territory of St. Pierre and Miquelon remained unexplored due to a long jurisdictional moratorium. The basin contains an impressive thickness of Jurassic to Tertiary-aged sediments, including source and reservoir rocks and remains undrilled in the Canadian jurisdiction. Two deep water basins located north-east of the Grand Banks of Newfoundland in an intra-continental setting are the Flemish Pass and East Orphan basins. A 2003 well in the Flemish Pass Basin - Mizzen L-11 - has proven the existence of rich Kimmeridgian-aged source rocks and had a 5 m of net oil pay in Late Jurassic sandstone ("Baccalieu" sandstone) reservoirs equivalent to the Jeanne d'Arc Formation in the Jeanne d'Arc Basin. The East Orphan Basin contains an impressive number of large undrilled structures, has seismic sequences that correlate to the Kimmeridgian source rocks in the adjacent basins and is in a midst of an exploration effort by Chevron Canada and its partners. A first well in the basin, the Great Barasway F-66 was drilled during the 2006 fall/winter and was rig released on winter 2007 with a total depth drilled of 7404m but its results remain confidential. The West Orphan Basin has seen drilling only on bold or thinly covered basement blocks and may have Cretaceous mature source rocks within deeper grabens. Figure 1. Location of deepwater basins offshore NL and of the representative deepwater wells Great Barasway F-66, Mizzen L-11 and ODP Leg 210 holes. (available in full paper) Additional deepwater petroleum potential exists in the Hopedale Basin, of Labrador Sea where recent 2D seismic data shows that deep synrift depocenters and thick sedimentary cover continue into the deepwater, where structural and stratigraphic traps are abundant and an oil play may be present. Regional Geology The Newfoundland and Labrador margin developed during the Mesozoic break-up of Pangaea and opening of the North Atlantic Ocean (Enachescu, 1987 and 1988; Tankard and Welsink, 1987; Sinclair, 1988; Grant and McAlpine, 1990; McAlpine, 1990; Enachescu and Dunning, 1994; Enachescu et al., 2005c). Extensional structures and salt diapirism containing thick syn rift and thermal subsidence sedimentary fill characterizes the basins and sub-basins formed along the margin (Atkinson and Fagan, 2000; Hogg and Enachescu, 2001; Enachescu and Fagan, 2005; Enachescu and Hogg, 2005).
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 | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 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 ».