| Title | Petroleum generation kinetic models for Late Ordovician kukersite Yeoman Formation source rocks, Williston Basin (southern Saskatchewan), Canada |
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| Author | Chen, Z ; Liu, X;
Osadetz, K G |
| Source | Fuel vol. 241, 2018 p. 234-246, https://doi.org/10.1016/j.fuel.2018.11.154 |
| Image |  |
| Year | 2018 |
| Alt Series | Natural Resources Canada, Contribution Series 20180193 |
| Publisher | Elsevier BV |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf; html |
| Province | Saskatchewan |
| NTS | 72H |
| Area | North Dakota; Canada; United States of America |
| Lat/Long WENS | -106.0000 -103.0000 50.0000 46.0000 |
| Subjects | fossil fuels; geochemistry; Upper Ordovician; petroleum resources; hydrocarbons; source rocks; petroleum generation; models; bedrock geology; lithology; sedimentary rocks; oil shales; sedimentary
basins; organic geochemistry; pyrolysis; thermal analyses; temperature; kerogen; Yeoman Formation; Williston Basin; Gloeocapsomorpha prisca; Methodology; Phanerozoic; Paleozoic; Ordovician |
| Illustrations | graphs; models; bar graphs; tables; location maps; stratigraphic charts; plots |
| Program | Geoscience for New Energy Supply (GNES) Shale-hosted petroleum resource assessment |
| Released | 2018 12 17 |
| Abstract | Ordovician Yeoman Fm. kukersite source rocks from Canadian Williston Basin are composed almost exclusively of Gloeocapsomorpha prisca (G. prisca) alginite. Thermocatalytic petroleum generation from G.
prisca alginate differs significantly from that of amorphous bituminite typical of marine Type II source rocks. Commonly used petroleum generation kinetic parameter optimization procedures that assume nth order chemical reactions fail to reproduce
sample Flame Ionization Detector (FID) pyrograms using expected chemical bond activation energies. A parallel nucleation-growth reaction model (PN-GRM) successfully addresses these deficiencies for this specific kerogen type. Programed pyrolysis of
seventeen kukersite sample FID pyrograms as well as two additional kukersite Rock-Eval datasets reveal the kinetic characteristics of this globally significant, but stratigraphically restricted marine Type I source rock. The results show that the
PN-GRM closely approximates the chemical reactions as demonstrated by reproduction of kukersite FID pyrograms, that kukersite source rocks are thermally more stable as indicated by elevated petroleum generation onset temperatures, and that
compositionally simple and homogeneous source rocks, such as kukersites, typically exhibit a sharply increasing petroleum generation rate and a narrow oil window both in nature and in pyrolysis experiments. |
| Summary | (Plain Language Summary, not published)
Ordovician Yeoman Fm. kukersite source rocks from Canadian Williston Basin contain exclusively of Gloeocapsomorpha Prisca (G. Prisca) Zalessky 1917
alginite, a special organic matter with distinct characteristics differing from typical marine source rock. Commonly used method for estimating generation kinetic parameters fails to reproduce analyzing records and generate physically meaningful
parameters. A parallel nucleation-growth reaction model (PN-GRM) was developed to addresses the deficiencies for this specific kerogen type. Rock-Eval pyrograms of 17 kukersite samples as well as two additional Rock-Eval datasets were used in the
case study. The results show that the PN-GRM closely approximates the chemical reactions, that kukersite source rocks are thermally more stable and are compositionally simple and homogeneous source rocks with a fast petroleum generation rate and a
narrow oil window both in nature and in pyrolysis experiments. |
| GEOSCAN ID | 311200 |
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