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Technical Notes - IGI

Technical Notes

Approximately every 6 to 8 weeks IGI will publish a concise “Technical Note” here on our website, which we hope will be of interest to our clients, or indeed anyone interested in petroleum geochemistry and petroleum systems analysis. These short documents will cover a wide range of topics within the fields of oil & gas geochemistry, petroleum source rocks, basin modelling, and even aspects of our software packages. The first of these appeared on our website in January 2016.  Please come back regularly to check for new additions.  The Technical Notes published so far can be found listed below, and also on our News Page as they are released.

 


35. Lack of biodegradation in some cool shallow oilfields: Palaeopasteurisation

by Paul Farrimond (March 2023)

Click to download 35. Lack of biodegradation in some cool shallow oilfields: Palaeopasteurisation

34. Methylhopanes: Biomarkers for Oil Source Correlation

by Paul Farrimond (October 2022)

Click to download 34. Methylhopanes: Biomarkers for Oil Source Correlation

33. What are age-diagnostic biomarkers?

by Paul Farrimond (July 2022)

Click to download 33. What are age-diagnostic biomarkers?

32. Uncertainty and Variability in Geology

by Dan Cornford (May 2022)

Click to download 32. Uncertainty and Variability in Geology

31. Upper Jurassic source rock overview: UK and Norway North Sea

by Paul Farrimond (March 2022)

Click to download 31. Upper Jurassic source rock overview: UK and Norway North Sea

30. Patterns in the mind - Part 2

by Dan Cornford (January 2022)

Click to download 30. Cornford_Clustering Part 2

29. The extinction of machine learning?

by Dan Cornford (December 2021)

Click to download 29. Cornford_The extinction of machine learning?

28. Patterns in the mind – Part 1

by Dan Cornford (October 2021)

Click to download 28. Cornford_Clustering Part 1

27. How the “Rayleigh fractionation effect” is used to model the source and maturity of hydrocarbon gases: principles and potential problems

by Marianne Nuzzo and Mischa Gehlen (August 2021)

Click to download 27. Isotopes Gas Geochemistry

26. Biomarkers in kerogen

by Paul Farrimond (April 2021)

  Click to download 26. Biomarkers in kerogen

25. Forensic use of diagnostic biomarker ratios in environmental oil spill geochemistry

by Marianne Nuzzo and Mischa Gehlen (February 2021)

Click to download 25. Forensic Oil Geochemistry

24. Modelling for comfort or comfort from modelling?

by David Gardiner (September 2020)

Click to download 24. Modelling for comfort or comfort from modelling?

23. Detection of micro-seepage of deep-sourced fluids by modelling geochemical and heat flow signals

by Marianne Nuzzo (July 2020)

Click to download 23. Detection of micro-seepage of deep-sourced fluids by modelling geochemical and heat flow signals

22. Geochemistry of oils in the Wessex Basin, UK

by Paul Farrimond (May 2020)

Click to download 22. Geochemistry of oils in the Wessex Basin, UK

21. Rearranged hopanes in petroleum geochemistry

by Paul Farrimond (March 2020)

Click to download 20. Rearranged hopanes in petroleum geochemistry

20. Combining petroleum systems modelling approaches to de-risk frontier rift basins: an application to the Namibe Basin, off southern Angola

by Tiago Cunha (January 2020)

Click to download 20. Combining petroleum systems modelling: Namibe Basin, off southern Angola

19. The importance of igneous intrusions and basement composition on the timing of petroleum generation

by David Gardiner (October 2019)

Click to download 19. Igneous intrusions and basement composition

18. Maturity signals in oils: Natural & predictable variability between compound classes

by Paul Farrimond (August 2019)

Click to download 18 Maturity signals in oils

17. The use of 28,30-Bisnorhopane as a stratigraphic marker

by Laura Garner (June 2019)

Click to download 17 The use of 28,30-Bisnorhopane as a stratigraphic marker

16. Sulfur-rich (Type II-S) source rocks and associated hydrocarbons

by Laura Garner (March 2019)

Click to download 16. Sulfur-rich (Type II-S) source rocks and associated hydrocarbons

15. A review of oil geochemistry in the UK North Sea

by Akinniyi Akinwumiju (November 2018)

  Click to download 15 A review of oil geochemistry in the UK North Sea

14. ‘Maturity contradictions’: Migration-contamination in crude oil

By Laura Garner (September 2018)

Click to download 14. ‘Maturity contradictions’: Migration-contamination in crude oil

13. Distinguishing Evaporative Fractionation and Biodegradation of Petroleum – An example from West of Shetland (UK)

By Marianne Nuzzo (July 2018)

Click to download 13. Evaporative Fractionation and Biodegradation of Petroleum

12. Petroleum Systems in Oceanic-Transitional Crust: an example from the SW Africa Margin

By Tiago Cunha (January 2018)

Click to download 12. Oceanic Basement Petroleum Systems

11. Geochemical surveys of sub-marine hydrocarbon seeps in petroleum exploration

By Marianne Nuzzo (November 2017)

Click to download 11. Seep Geochemistry

10. Total Organic Carbon estimates from wireline logs - Part #2

By Andrew Green (September 2017)

Click to download 10. TOC estimates from wireline logs - Part 2

9. Total Organic Carbon estimates from wireline logs - Part #1

By Andrew Green (July 2017)

  Click to download 9. TOC estimates from wireline logs - Part 1

8. The Petroleum Geochemist's Inorganic Toolkit: Rhenium and Osmium isotopes

By David Gardiner (May 2017)

Click to download 8. Rhenium Osmium in Petroleum

7. Assessing Basins’ Petroleum Systems rapidly with 1-D Pseudo-well Modelling

By Tiago Cunha (March 2017)

Click to download 7. Assessing Basins’ Petroleum Systems rapidly with 1-D Pseudo-well Modelling

6. Source-characteristic information preserved in hopane carbon number composition 

By Paul Farrimond (January 2017)

Click to download 6. Source-characteristic information preserved in hopane carbon number composition

5. Alternative Source Rocks in the Norwegian sea - Potentially Cretaceous sourced hydrocarbons in the Møre and Vøring  Basins

By Laura Garner (October 2016)

Click to download 5. Alternative source rocks in the Norwegian sea

4. Expansion of the p:IGI+ SARA property model

By Andrew Green (July 2016)

Click to download 4. Expansion of the p:IGI+ SARA property model

3. Are coals oil-prone or gas-prone source rocks?

By David Gardiner (June 2016)

Click to download 3. Are coals oil-prone or gas-prone source rocks?

2. Permian-sourced oil in the Norwegian Barents Sea

By Paul Farrimond (March 2016)

Click to download 2. Permian-sourced oil in the Norwegian Barents Sea

1. Waxy oils from lacustrine source rocks

By Paul Farrimond (January 2016)

Click to download 1. Waxy oils from lacustrine source rocks