1 / 26

L.D. Stasiuk and N.S.F. Wilson Natural Resources Canada Geological Survey of Canada: Calgary

Kerogen, thermal maturity, crude oil inclusions, & pyrobitumens in Bowser and Hazleton Group, Bowser Basin, B.C. L.D. Stasiuk and N.S.F. Wilson Natural Resources Canada Geological Survey of Canada: Calgary.

gretchen-torres
Download Presentation

L.D. Stasiuk and N.S.F. Wilson Natural Resources Canada Geological Survey of Canada: Calgary

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Kerogen, thermal maturity, crude oil inclusions, & pyrobitumens in Bowser and Hazleton Group, Bowser Basin, B.C. L.D. Stasiuk and N.S.F. Wilson Natural Resources Canada Geological Survey of Canada: Calgary

  2. Purpose of todays presentation: kerogen (source rocks?), thermal maturity, distribution of crude oil-bitumen-pyrobitumen, temperatures, paragenesis etc. • Review of most current petrology (organic & sedimentary) • data collected at GSC Calgary in Bowser • Review (briefly) previous thermal maturity data from Bowser • Basin (Evenchick et al , 2002)

  3. Methods • Organic Petrology: Reflected white and fluorescent light microscopy • Sedimentary Petrology: Transmitted & reflected light – fluorescence microscopy, fluid inclusion microthermometry • Organic Geochemistry – Rock Eval, biomarkers (?)

  4. Samples in this study

  5. Ritchie wells 56.417oN, 129.962oWRock Eval – TOC Bowser Gp ? Hazleton Gp ? Source rock ?

  6. Rock Eval – kerogen type Ritchie wells 56.417oN, 129.962oW

  7. Terrestrial-dominated macerals in kerogen: deltaic, marine influence, Ritchie wells 56.417oN, 129.962oW Ritchie A-3-J, 2115-2960’, Bowser and uppermost Hazleton ?

  8. Terrestrial-dominated macerals in kerogen: deltaic, marine influence Ritchie A-3-J, 2115-2960’, Bowser and uppermost Hazleton ?

  9. Probable potential SPENT source rock: marine kerogen precursor ? Spent amorphous kerogen Ritchie A-3-J, Hazleton Group ? Lower Jurassic 6745’, TOC = 2.4 % Equivalent to Nordegg of Alberta ??

  10. Rock Eval – S1 and S2

  11. cond- dry gas dry gas rare Bowser ? Hazleton ? Thermal maturity of Bowser and Hazleton groups – Vitrinite %Ro ~ 270-290 oC

  12. Pyrobitumens – early high %Ro and late low %Ro cond- dry gas dry gas rare ~ 270-290 oC Bowser ? Hazleton ? ~ 180-190 oC

  13. Late ‘low’ maturity pyrobitumens in Ritchie C-62-G ~ 180-190 oC Ritchie C-62-G, late highly anisotropic pyrobitumen in late calcites, 9699.6’ Ritchie C-62-G, late low %Ro pyrobitumen in fractures, 7235’

  14. Late - high maturity crude oil inclusions in Ritchie A-3-J, 2115.7’ 803-2002 Ritchie A-3-J, late crude oil inclusions in calcite and fractures, 2115.7’’

  15. Late - high maturity crude oil (condensate) inclusions in Ritchie Ritchie A-3-J, late crude oil in intercrystalline areas in quartz cement, 4723.4’ Ritchie A-3-J, late crude oil in in calcite cement, 6745.0’

  16. 35-45 oAPI green blue red > 45-55 oAPI

  17. Late - high maturity crude oil and condensate inclusions in Ritchie A-3-J. > 35-50/55 oAPI > 50-55 oAPI

  18. Tango Creek Formation Bowser Lake Group

  19. Late - high maturity crude oil inclusions in Muskaboo Creek Fm, Bowser Lake Group > 55 oAPI

  20. Late pyrobitumen in Muskaboo Creek Fm, Bowser Lake Group, Muskaboo Creek outcrop, 57.56oN, 129.96oW %RoRmean = 1.20, ~ 150oC

  21. Late - high maturity crude oil inclusions and late pyrobitumen, Bowser Lake Group, 57.441oN, 128.572oW, outcrop Pyrobitumen: %RoRmean = 1.58 Crude oil inclusions Host rock has a thermal maturity level of ~ > 3.6 %Rovitrinite (>240oC). Late pyrobitumen altered to ~ 160-165oC

  22. Late - high maturity crude oil inclusions, Bowser Lake Group, 57.441oN, 128.572oW, outcrop > 50-55 oAPI

  23. Late - high maturity crude oil inclusions, Tango Creek Fm, Sustut Group, 57.709oN, 128.814oW, outcrop Crude oil inclusions > 50-55 oAPI Late pyrobitumen: 1.91 %Ro, ~ 170-180 oC Early pyrobitumen: 5.55 %Ro, ~ > 250oC

  24. Evenchick et al., GSC Open File 4343, 2002

  25. Tango Creek Formation Bowser Lake Group

More Related