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TitrePetroleum Reservoir Potential of Upper Paleozoic Sandstones in the Offshore Maritimes Basin, Eastern Canada
TéléchargerTéléchargements
AuteurHu, K; Dietrich, J
SourceCommission géologique du Canada, Dossier public 6679, 2010, 33 pages, https://doi.org/10.4095/286243
Année2010
ÉditeurRessources naturelles Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/286243
Medianumérique; en ligne
Référence reliéeCette publication est reliée Hu, K; Dietrich, J; (2008). Evaluation of hydrocarbon reservoir potential in Carboniferous sandstones in six wells in the Maritimes Basin, Eastern Canada, Commission géologique du Canada, Dossier public 5899
Formatspdf
ProvinceRégion extracotière de l'est
Lat/Long OENS-67.0000 -51.0000 54.0000 45.0000
Sujetshydrocarbures; capacité de production d'hydrocarbures; gaz d'hydrocarbure; inclusions fluides; zones tectonostratigraphiques; maturation des hydrocarbures; porosité; perméabilité; puits; corrélations stratigraphiques; analyses stratigraphiques; analyses de diagrammes de sondage; roches sédimentaires; grès; pétrophysique; Puit Bradelle L-49 ; Puit Brion Island No. 1 ; Puit Irishtown No. 1 ; Puit Cable Head E-95 ; Puit East Point E-49 ; Puit North Sydney F-24 ; Formation de Naufrage ; Formation de Bradelle ; Formation de Cable Head ; Formation de Green Gables ; Groupe de Mabou ; Groupe de Windsor ; Groupe d'Horton ; combustibles fossiles; stratigraphie; Paléozoïque; Dévonien; Carbonifère; Permien; Mississippien
Illustrationstables; location maps; stratigraphic columns; cross-sections; plots; logs
Consultation
Endroit
 
Bibliothèque de Ressources naturelles Canada - Ottawa (Sciences de la Terre)
 
ProgrammeBassins sédimentaires d'Hudson / Foxe Bay, GEM : La géocartographie de l'énergie et des minéraux
Diffusé2010 09 17
Résumé(disponible en anglais seulement)
The reservoir characteristics of Carboniferous-Permian sandstones in nine wells in the Maritimes Basin in eastern Canada are evaluated through compilation of core measurements and detailed petrophysical analyses of wireline well logs. The wells include Bradelle L-49, Brion Island No.1, Irishtown No.1, Cablehead E-95 and East Point E-49 in the Magdalen Basin, North Sydney F-24 and Hermine E-94 in the Sydney Basin, and Hare Bay E-21 and Verrazano L-77 in the St. Anthony Basin. Reservoir properties evaluated include lithology, porosity, permeability and water saturation. Although the average porosity and permeability of sandstones in the study wells decrease rapidly with depth, a significant percentage of sandstones have enhanced reservoir quality associated with secondary porosity development. Measured sandstone porosity values in the Magdalen Basin wells are up to 20 % to depths of 2000 m, and up to 15 % to depths of 3500 m. Sandstone porosity values in the Hare Bay well in the St Anthony Basin are up to 15 % to depths of 4500 m.
Possible oil or gas zones in Carboniferous sandstones are identified from porosity and water saturation data, in all nine wells evaluated in this study. Many of the indicated petroleum zones occur in thin shaly sandstones, characterised by very low porosity and permeability. However, possible petroleum zones occur in sandstones with fair to good porosity and permeability. Based on select porosity and water saturation cutoff values (phi>7.5% and Sw<55%), possible hydrocarbon reservoirs are identified in sandstones in the Upper Carboniferous Pictou and Mabou groups and Lower Carboniferous Horton Group. The evaluated well data indicate that sandstone reservoir quality does not appear to be a major limiting factor for petroleum resource potential in many parts of the offshore Maritimes Basin. Due to the complex and varied structural and depositional history in the region, it is uncertain if the reservoir-quality patterns observed in the study data can be extrapolated across all parts of the basin.
GEOSCAN ID286243