1887

Abstract

Summary

The maturity of source rocks due to their shallow burial is a critical factor in the Central North Sea. In order to examine lateral variations of maturity of the source rocks, quantitative analysis of seismic data is required. The motivation for this study is to investigate the effects and relative impact of organic content, thermal maturity and hydrocarbon generation on elastic properties of organic rich shales. Using some established models, realistic approximations and reference trends that are calibrated to our area and applicable to our well log data, we can begin to predict how our data will behave as conditions change. We observe consistent compaction trends for immature to early mature shales at similar levels of TOC, and can from there infer the effect of hydrocarbon generation in data from a deeply buried, mature source rock. These trends can potentially help us evaluate seismic inversion results and data from other wells where TOC content and source rock maturity are in question.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201800865
2018-06-11
2020-07-15
Loading full text...

Full text loading...

References

  1. Alfred, D. and Vernik, L.
    [2012] A new petrophysical model for organic shales. SPWLA 53rd Annual Logging Symposium, Cartagena, Colombia, June16–20.
    [Google Scholar]
  2. Carcione, J. M. and Avseth, P.
    [2015] Rock-physics templates for clay-rich source rocks. Geophysics, 80(5), D481–D500.
    [Google Scholar]
  3. Guo, Z., Li, X., Liu, C., Feng, X. and Shen, Y.
    [2013] A shale rock physics model for analysis of brittleness index, mineralogy and porosity in the Barnett shale. Journal of Geophysics and Engineering, 10, 1–10.
    [Google Scholar]
  4. Isaksen, G. H. and Ledje, K. H. I.
    [2001] Source rock quality and hydrocarbon migration pathways within the greater Utsira High area, Viking Graben, Norwegian North Sea. AAPG Bulletin, 85(5), 861–883.
    [Google Scholar]
  5. Lucier, A. M., Hofmann, R. and Bryndzia, L. T.
    [2011] Evaluation of variable gas saturation on acoustic log data from the Haynesville Shale gas play, NW Louisiana, USA.The Leading Edge, 30(3) 300–311.
    [Google Scholar]
  6. Løseth, H., Wensaas, L., Gading, M., Duffaut, K. and Springer, M.
    [2011] Can hydrocarbon source rocks be identified on seismic data?. Geology, 39(12), 1167–1170.
    [Google Scholar]
  7. NPD FactPages
    NPD FactPages [2017] [Online]. Norwegian Petroleum Directorate. Available: http://factpages.npd.no/FactPages/
    [Google Scholar]
  8. Vernik, L. and Landis, C.
    [1996] Elastic Anisotropy of Source Rocks: Implications for Hydrocarbon Generation and Primary Migration. AAPG Bulletin, 80(4), 531–544.
    [Google Scholar]
  9. Vernik, L.
    [2016] Seismic petrophysics in Quantitative Interpretation. Society of Exploration Geophysicists, pp. 226.
    [Google Scholar]
  10. Zhao, L., Qin, X., Han, D., Geng, J., Yang, Z. and Cao, H.
    [2016] Geophysics, 81(5), D527–D541.
    [Google Scholar]
  11. Ødegaard, E. and Avseth, P.
    [2004] Well log and seismic data analysis using rock physics templates. First Break, 22(10), 37–43.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201800865
Loading
/content/papers/10.3997/2214-4609.201800865
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error