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TitreHigh resolution characterization of a core from the Lower Jurassic Gordondale Member, Western Canada Sedimentary Basin
AuteurKondla, D; Sanei, H; Clarkson, C R; Goodarzi, F
SourceMarine and Petroleum Geology vol. 83, 2017 p. 50-59, https://doi.org/10.1016/j.marpetgeo.2017.03.011
Année2017
Séries alt.Secteur des sciences de la Terre, Contribution externe 20140361
ÉditeurElsevier
Documentpublication en série
Lang.anglais
DOIhttps://doi.org/10.1016/j.marpetgeo.2017.03.011
Mediapapier; en ligne; numérique
Formatspdf
ProvinceAlberta; Colombie-Britannique
Lat/Long OENS-122.0000 -114.0000 57.0000 51.0000
Sujetsbitume; schistes; reservoirs; mudstones; échantillons carrotés; résidus organiques; inertinite; migration des hydrocarbures; Jurassique
Illustrationslocation maps; stratigraphic charts; well logs; tables; graphs; plots; photomicrographs; photographs
ProgrammeCaractérisation des réservoirs de schiste, Les géosciences pour les nouvelles sources d'énergie
Résumé(disponible en anglais seulement)
The Gordondale Member is a hydrocarbon source rock and potential unconventional reservoir that extends across northeastern British Columbia and central-northwestern Alberta. It is an organic-rich, calcareous, fossiliferous mudstone with a median total organic carbon value of 6.0 wt%. A total of 230 samples were collected from approximately 25 m of Gordondale Member core for organic matter analysis
using Rock-Eval 6 analysis and organic petrology. Detailed core logging provides sedimentological context for organic matter characterization. The predominant organic material in the samples is solid bitumen and liptinite with lesser zooclast and inertinite. Most kerogen is Type II, autochthonous marine biomass, with minimal dilution by inert organic carbon. Rock-Eval Tmax values and random reflectance measurements of solid bitumen indicate the samples are within the oil generation window. Solid bitumen contributes a substantial amount of hydrocarbon potential to the interval. A micro-reservoir structure within the core is produced by thin intervals of impermeable displacive calcite that act asbarriers to the upward migration of free hydrocarbons. These free hydrocarbon accumulations could make excellent targets for horizontal wells within the Gordondale Member.
Résumé(Résumé en langage clair et simple, non publié)
L'étude porte sur la matière organique contenue dans le membre Gordondale du Jurassique inférieur, dans le Centre-Ouest de l'Alberta. Les résultats préliminaires permettent de conclure à l'existence de caractéristiques favorisant l'exploitation du gisement comme source d'hydrocarbures non classiques.
GEOSCAN ID295652