Magnetic expression in kerogen reveals ...
Document type :
Article dans une revue scientifique: Article original
DOI :
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Title :
Magnetic expression in kerogen reveals impact on fluid transport
Author(s) :
Nicot, Benjamin [Auteur]
TotalEnergies [[Total Energies. Anciennement : Total, TotalFina, TotalFinaElf]]
Korb, Jean-Pierre [Auteur]
PHysicochimie des Electrolytes et Nanosystèmes InterfaciauX [PHENIX]
Jolivet, Isabelle [Auteur]
TotalEnergies [[Total Energies. Anciennement : Total, TotalFina, TotalFinaElf]]
Vezin, Herve [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Gourier, Didier [Auteur]
Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL [ENSCP]
Rollet, Anne-Laure [Auteur]
247182|||PHysicochimie des Electrolytes et Nanosystèmes InterfaciauX [PHENIX]
TotalEnergies [[Total Energies. Anciennement : Total, TotalFina, TotalFinaElf]]
Korb, Jean-Pierre [Auteur]
PHysicochimie des Electrolytes et Nanosystèmes InterfaciauX [PHENIX]
Jolivet, Isabelle [Auteur]
TotalEnergies [[Total Energies. Anciennement : Total, TotalFina, TotalFinaElf]]
Vezin, Herve [Auteur]

Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Gourier, Didier [Auteur]
Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL [ENSCP]
Rollet, Anne-Laure [Auteur]
247182|||PHysicochimie des Electrolytes et Nanosystèmes InterfaciauX [PHENIX]
Journal title :
Magnetic Resonance
Abbreviated title :
Magn. Reson.
Volume number :
3
Pages :
125-136
Publisher :
Copernicus GmbH
Publication date :
2022-07-29
ISSN :
2699-0016
HAL domain(s) :
Chimie/Chimie théorique et/ou physique
English abstract : [en]
Abstract. How can the transport of fluids in a confined and complex
mixed organic/inorganic matrix be far below the expected value from a
topological aspect? A good example of this situation is oil shales. Oil and
gas ...
Show more >Abstract. How can the transport of fluids in a confined and complex mixed organic/inorganic matrix be far below the expected value from a topological aspect? A good example of this situation is oil shales. Oil and gas shales are source rocks in which organic matter has matured to form hydrocarbons. They exhibit a dual porous network formed by the intertwining of mineral and organic pores that leads to very low permeability. Still, the exact origin of this extremely low permeability remains somehow unclear. The present communication addresses this important question and provides novel insights on the mechanisms that strongly hinder fluid diffusion in such materials. By combining nuclear and electronic magnetic resonance techniques with SEM imaging, we show evidence that magnetic interaction occurs in kerogen. This results from a magnetic coupling between vanadyl present in porphyrins and the organic matrix. We demonstrate that such coupling retards fluid diffusion and is reversible. This key dynamical feature explains the extremely low mobility of oil in shale rocks. This phenomenon may be a more general feature occurring in several systems where fluids are confined in a complex hierarchical matrix that embeds both organic and inorganic radicals resulting from the aging process.Show less >
Show more >Abstract. How can the transport of fluids in a confined and complex mixed organic/inorganic matrix be far below the expected value from a topological aspect? A good example of this situation is oil shales. Oil and gas shales are source rocks in which organic matter has matured to form hydrocarbons. They exhibit a dual porous network formed by the intertwining of mineral and organic pores that leads to very low permeability. Still, the exact origin of this extremely low permeability remains somehow unclear. The present communication addresses this important question and provides novel insights on the mechanisms that strongly hinder fluid diffusion in such materials. By combining nuclear and electronic magnetic resonance techniques with SEM imaging, we show evidence that magnetic interaction occurs in kerogen. This results from a magnetic coupling between vanadyl present in porphyrins and the organic matrix. We demonstrate that such coupling retards fluid diffusion and is reversible. This key dynamical feature explains the extremely low mobility of oil in shale rocks. This phenomenon may be a more general feature occurring in several systems where fluids are confined in a complex hierarchical matrix that embeds both organic and inorganic radicals resulting from the aging process.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
CNRS
CNRS
Collections :
Research team(s) :
Propriétés magnéto structurales des matériaux (PMSM)
Submission date :
2022-07-29T12:38:38Z
2022-08-24T08:16:56Z
2022-08-24T08:16:56Z
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