By Paul Farrimond
25-Norhopanes have been reported in biodegraded oils since the late 1970s, and Seifert & Moldowan (1979) proposed that the methyl group at C-25 in the regular hopanes was removed by microbial demethylation associated with the degradation at the oil/water contact of an oil accumulation.
Director & Technical Advisor
from 9-11th June, and will be presenting several talks across a range of subjects and recent collaborations:
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1. Title: The Role of Expertise in a Time of AI: Workflows for regional studies
Presenter: Dan Cornford
Co-authors: M. Nuzzo, D. Gardiner (IGI), H. Rasmussen, S.
Managing Director​ & Data Scientist
Meeting in Sheffield on 18-19 June. IGI are pleased to be continuing our regular sponsorship of this conference – an annual meeting that mainly promotes student research projects in this field.
Director & Technical Advisor
This technical note outlines a workflow using the IGI Machine Learning (ML) tools to reproduce the oil-family framework reported by Holger Justwan, Birger Dahl and Gary Isaksen in their 2006 study of oils and condensates from the Norwegian South Viking Graben.
Managing Director​ & Data Scientist
By Paul Farrimond
These aromatic biomarkers are unfortunately rarely used in petroleum geochemistry. They have the five-ring structure of the hopanes but with an aromatic ring fused to the E-ring in place of the normal side chain.
Director & Technical Advisor
After extending the collaboration with the Norwegian Offshore Directorate to host and update the public geochemical database of the Norwegian Continental Shelf (NOCS) for the coming 5 years, IGI are pleased to announce that the latest update of the database is now complete.
Senior Petroleum Geochemist/Basin Modeller
Although an unfamiliar molecule to many petroleum geochemists, bacteriohopanetetrol (BHT) is nevertheless an important one, being a major source of the hopanes found in oils and their source rocks (Ourisson et al. , 1984).
Director & Technical Advisor
IGI’s Marianne Nuzzo is a co-author on a groundbreaking study led by Dr.
Seep biogeochemistry & organic geochemistry
By Paul Farrimond
Oleanane is present in only some oils and source rocks. It occurs as two isomers – 18α(H) and 18b(H) – and is typically found as a doublet peak in the m/z 191 mass chromatogram eluting just before the C30 αb hopane.
Director & Technical Advisor
