| Titre | Hydrocarbon migration detected by regional temperature field variations, Beaufort-Mackenzie Basin, Canada |
| Auteur | Chen, Z; Osadetz, K G; Issler, D R; Grasby, S E |
| Source | American Association of Petroleum Geologists Bulletin vol. 92, no. 12, 2008 p. 1639-1653, https://doi.org/10.1306/07300808011 |
| Année | 2008 |
| Séries alt. | Secteur des sciences de la Terre, Contribution externe 20080239 |
| Éditeur | American Association of Petroleum Geologists AAPG/Datapages |
| Document | publication en série |
| Lang. | anglais |
| DOI | https://doi.org/10.1306/07300808011 |
| Media | papier; en ligne; numérique |
| Formats | pdf |
| Province | Région extracotière du nord; Territoires du Nord-Ouest; Yukon |
| SNRC | 107A/12; 107A/13; 107A/14; 107B; 107C; 107D; 107E/02; 107E/03; 117A/; 117A/08; 117A/09; 117A/10; 117A/14; 117A/15; 117A/16; 117D/03; 117D/06 |
| Lat/Long OENS | -139.0000 -129.0000 70.7500 68.2500 |
| Sujets | hydrocarbures; migration des hydrocarbures; maturation des hydrocarbures; capacité de production d'hydrocarbures; maturation thermique; analyses thermiques; anomalies; caractéristiques structurales;
failles; systèmes de failles; zones de failles; Paléocène; combustibles fossiles; géologie marine; géologie structurale; Cénozoïque |
| Illustrations | location maps; cross-sections; stratigraphic columns; profiles |
| Programme | Sécurité de l'approvisionnement énergétique du
Canada |
| Résumé | (disponible en anglais seulement)
The regional Beaufort-Mackenzie Basin temperature field is characterized using data collected from drill-stem tests and bottom-hole temperature logs.We
recognize two thermal anomalies, each of which is associated with a specific geological setting. Elevated temperatures are observed in (1) the western Beaufort Sea, where post-Eocene erosion removed Cenozoic strata and folding is common in a
contractional tectonic regime, and (2) along fault zones where upward flow transports heat by advection. Depressed temperatures are observed in Eocene and post-Eocene rapidly subsiding depocenters, with overpressure developed below 3000 m (9843 ft).
Older strata
along the southeast rifted margin are characterized by a more normal thermal regime. Evidence from anomalously high temperatures in both map and cross-sectional views suggests that fault zones and major regional aquifers accommodate
the upward expulsion of fluids fromdeep overpressured zones.Many significant petroleum discoveries occur in areas where anomalously high temperatures are observed, suggesting that petroleum migration occurs along the same flow networks. Identifying
anomalies in the temperature field may therefore be a useful exploration technique. |
| GEOSCAN ID | 225516 |
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