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TitreHydrocarbon migration detected by regional temperature field variations, Beaufort-Mackenzie Basin, Canada
AuteurChen, Z; Osadetz, K G; Issler, D R; Grasby, S E
SourceAmerican Association of Petroleum Geologists Bulletin vol. 92, no. 12, 2008 p. 1639-1653, https://doi.org/10.1306/07300808011
Année2008
Séries alt.Secteur des sciences de la Terre, Contribution externe 20080239
ÉditeurAmerican Association of Petroleum Geologists AAPG/Datapages
Documentpublication en série
Lang.anglais
DOIhttps://doi.org/10.1306/07300808011
Mediapapier; en ligne; numérique
Formatspdf
ProvinceRégion extracotière du nord; Territoires du Nord-Ouest; Yukon
SNRC107A/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
Sujetshydrocarbures; 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
Illustrationslocation maps; cross-sections; stratigraphic columns; profiles
ProgrammeSécurité 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 ID225516