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TitreArtificial thermal maturation of source rocks at different thermal maturity levels: application to the Triassic Montney and Doig formations in the Western Canada Sedimentary Basin
AuteurRomero-Sarmiento, M -F; Euzen, T; Rohais, S; Jiang, C; Littke, R
SourceOrganic Geochemistry vol. 97, 2016 p. 148-162, https://doi.org/10.1016/j.orggeochem.2016.05.002
Année2016
Séries alt.Secteur des sciences de la Terre, Contribution externe 20150437
ÉditeurElsevier
Documentpublication en série
Lang.anglais
DOIhttps://doi.org/10.1016/j.orggeochem.2016.05.002
Mediapapier; en ligne; numérique
Formatspdf
ProvinceAlberta
SNRC83M; 83N; 84C; 84D; 84E/04
Lat/Long OENS-120.0000 -116.0000 57.5000 55.0000
Sujetsgéochimie organique; maturation thermique; pétrographie; analyses pétrographiques; pyrolyse; Bassin sédimentaire de l'ouest du Canada; Formation de Montney ; Formation de Doig ; géochimie; Mésozoïque; Trias
Illustrationslocation maps; stratigraphic sections; histograms; photomicrographs
ProgrammeÉvaluation des ressources pétrolières pour les schistes, Les géosciences pour les nouvelles sources d'énergie
Résumé(disponible en anglais seulement)
Artificial thermal maturation of petroleum source rocks is widely performed by either open- or closedsystem pyrolysis. These experiments are performed usually on immature source rock or isolated kerogen samples to quantify petroleum generation potential and to calculate kinetic parameters. Here, we characterize a maturation series from the Triassic Montney and Doig formations in the Western Canada Sedimentary Basin (WCSB), in order to investigate the evolution of the source rock properties and their corresponding kerogen kinetic parameters as a function of the thermal maturity. Organic petrography determined the thermal maturity and the spatial distribution of organic matter particles. Rock-Eval Shale Play analyses were then applied to assess the presence of both free and sorbed hydrocarbons still contained in the sample as well as the hydrocarbon generation potential. Based on vitrinite reflectance values, three kerogen samples from the Doig Formation and one kerogen sample from the Montney Formation at different thermal maturity levels were selected for analysis of bulk kinetic parameters (e.g., activation energy distribution, frequency factor) using programmed open-system pyrolysis. Additionally, we evaluated the type of hydrocarbons and determined the molecular composition of organic compounds that comprise the first two Rock-Eval peaks (Sh0 and Sh1) obtained during the improved thermovaporization. TD-GC-MS-FID analyses were carried out on rock samples sequentially from 100 C to 200 C and then from 200 C to 350 C in order to characterize the composition of hydrocarbons represented by each Rock-Eval Shale Play peak. Free and sorbed low-to-medium molecular weight aliphatic and aromatic hydrocarbons (
Résumé(Résumé en langage clair et simple, non publié)
Des échantillons de roches mères schisteuses de différents niveaux de maturité thermique du Bassin sédimentaire de l'Ouest Canadien ont été analysés par analyse de pyrolyse Rock-Eval et par observations pétrographiques. Le but était d'étudier l'évolution de leur potentiel en hydrocarbures en fonction de la maturation et de cette relation à leurs compositions macérales organiques.
GEOSCAN ID297625