Natural H2 exploration: tools and workflows to characterize a play Dan Lévy, Vincent Roche, Gabriel Pasquet, Valentine Combaudon, Ugo Geymond, Keanu Loiseau and Isabelle Moretti Sci. Tech. Energ. Transition, 78 (2023) 27 Published online: 13 October 2023 DOI: 10.2516/stet/2023021