Stephan Séjourné
Exploration geologist, Stephan Séjourné has worked mainly as an independent consultant, initially for the petroleum industry before turning his attention to other types of resources, especially natural hydrogen, helium and geothermal energy. He has founded Enki GeoSolutions in 2017 to develop and promote innovative and sustainable geological solutions in the fields of energy and storage. Stephan has a long track record of coordinating or participating in multi-client industrial projects and multi-disciplinary academic or governmental projects in a variety of geological environments.
The Canadian Shield and Paleozoic sedimentary basins in Quebec host a diverse array of ultramafic rocks, iron formations, uranium-rich rocks, supramature shales and lithospheric fractures, making it a promising area for natural hydrogen. However, Quebec spans over 1.5 million km2 (about one third of the European Union) and lacks obvious exploration leads, complicating exploration efforts. To document Quebec's natural hydrogen potential, a geological review and geochemical data inventory was conducted to highlight the characteristics and distribution of potential hydrogen source rocks. Then, a rating system was developed, considering the quality of source rocks, the presence of reservoir rocks, and the proximity to end-users. This analysis identified key areas for fieldwork, reducing exploratory risks and investment needs. This talk will present: 1) the systematic rating method used;2) key findings, addressing where to start exploring for natural hydrogen;and 3) the study’s impacts on Quebec’s natural hydrogen ecosystem (academic, regulatory and industrial). |
List of co-authors:
Stephan Séjourné (1-2)
Félix-Antoine Comeau (2)
Maria Luisa Moreira dos Santos (2)
Geneviève Bordeleau (2)
Maxime Claprood (3)
Pascal Mouge (4)
Valentin Mulliez (4)
Michel Malo (2)
Bernard Giroux (2)
Erwan Gloaguen (2)
Jasmin Raymond (2)
(1) Enki GeoSolutions, Montréal, QC, Canada
(2) Institut national de la recherche scientifique, Centre Eau Terre Environnement (INRS-ETE), Québec, QC, Canada
(3) Centre d’études sur les ressources minérales, Université du Québec à Chicoutimi (UQAC), Saguenay, QC, Canada
(4) Novatem, Mont-Saint-Hilaire, QC, Canada
Geologist
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