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TitleRevisiting East Mackay B-45 oil from the Central Mackenzie Corridor, NW Canada: Potential source rocks based on latest geochemical characterization
AuthorJiang, C; Hadlari, T; Fowler, M; Issler, D
Source27th International Meeting on Organic Geochemistry, IMOG 2015 Prague, book of abstracts; by IMOG Organizing Committee; 2015 p. 261-262, 1 sheet
Year2015
Alt SeriesEarth Sciences Sector, Contribution Series 20150067
PublisherEuropean Association of Organic Geochemists (EAOG)
Meeting27th International Meeting on Organic Geochemistry (IMOG 2015); Prague; CZ; September 13-18, 2015
Documentbook
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceNorthwest Territories
NTS96
AreaMackenzie Corridor
Lat/Long WENS-128.0000 -120.0000 68.0000 64.0000
Subjectsfossil fuels; geochemistry; oil; source rocks; gas; dolomites; geochemical interpretations; East Mackay B-45 well; Franklin Mountain Formation; Ordovician
ProgramMackenzie Corridor, Shield to Selwyn, GEM2: Geo-mapping for Energy and Minerals
LinksOnline - En ligne (PDF, 100 MB)
Abstract(unpublished)
Low API gravity (20.4o) and high sulfur (2.02%) crude oil was recovered from the Ordovician Franklin Mountain Formation dolomite of East Mackay B-45 well during drill stem testing. Previous geochemical studies based on gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) analysis of saturated fractions and porphyrin compositions of the oil and potential source rock samples suggested that the East Mackay B-45 oil together with the bitumen from the Russell M-07 well in the study area are probably sourced from the Cretaceous Slater River shales. A more detailed geochemical study utilizing the geochemical signatures of both saturated and aromatic hydrocarbon fractions leads to a conclusion that the hydrocarbon accumulation in the Franklin Mountain dolomite is of mixed sources, with contributions not only from the Cretaceous Slater River shale, but also the Devonian Canol and/or Bluefish shales and an organic-rich carbonate formation as well.
Summary(Plain Language Summary, not published)
A medium-to-heavy sour crude oil was recovered from drilling stem test at 3990-4092 foot depth from the East Mackay B-45 well in the Central Mackenzie Corridor. Previous geochemical studies based the compositions of saturated hydrocarbons and porphyrins of the oil and potential source rock samples indicated the East Mackay B-45 oil to be probably sourced from the Cretaceous Slater River shales. This study utilizing both saturated and aromatic hydrocarbon components of the oil concludes that the petroleum accumulation in the B-45 well has source contributions not only from the Cretaceous Slater River shale, but also the Devonian Canol and/or Bluefish shales and an organic-rich carbonate formation as well.
GEOSCAN ID296511