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TitleHigh resolution characterization of a core from the Lower Jurassic Gordondale Member, Western Canada Sedimentary Basin
AuthorKondla, 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
Year2017
Alt SeriesEarth Sciences Sector, Contribution Series 20140361
PublisherElsevier
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceAlberta; British Columbia
AreaGordondale Member
Lat/Long WENS-122.0000 -114.0000 57.0000 51.0000
Subjectsbitumen; shales; reservoirs; mudstones; core samples; organic residues; inertinite; hydrocarbon migration; Rock-Eval; micro-reservoir; Jurassic
Illustrationslocation maps; stratigraphic charts; well logs; tables; graphs; plots; photomicrographs; photographs
ProgramShale Reservoir Characterization, Geoscience for New Energy Supply (GNES)
AbstractThe 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.
Summary(Plain Language Summary, not published)
This study investigates the organic matter within the Lower Jurassic Gordondale Member in west-central Alberta. The results establish preliminary reservoir qualities for the unit which could be exploited as an unconventional hydrocarbon reservoir.
GEOSCAN ID295652