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Mesoscale structure, mechanics, and transport properties of source rocks’ organic pore networks
Ist Teil von
Proceedings of the National Academy of Sciences - PNAS, 2018-12, Vol.115 (49), p.12365-12370
Ort / Verlag
National Academy of Sciences
Erscheinungsjahr
2018
Link zum Volltext
Quelle
EZB-FREE-00999 freely available EZB journals
Beschreibungen/Notizen
Significance In source rocks, natural hydrocarbons are generated from organic matter dispersed in a fine-grained mineral matrix. The potential recovery of hydrocarbons is therefore influenced by the geometry of the organic hosted porous networks. Here, the three-dimensional structures of such networks are revealed using electron tomography with a subnanometer resolution. The reconstructions are first characterized in terms of morphology and topology and then used to build a multiscale simulation tool to study the mechanics and the transport properties of confined fluids. Our results offer evidence of the prevalent role of connected nanopores, which subsequently constitutes a material limit for long-term hydrocarbon production.