Pore structure–transport relationships in the Bowland Shale
| العنوان: | Pore structure–transport relationships in the Bowland Shale |
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| المؤلفون: | Eleanor G. Pitcher, Robin S. Fletcher, David J. Large, Sean P. Rigby |
| المصدر: | Geological Society, London, Special Publications. 534 |
| بيانات النشر: | Geological Society of London, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Geology, Ocean Engineering, Water Science and Technology |
| الوصف: | Shale rocks are highly structurally and chemically heterogeneous, such that the pore structure–transport relationship is complex. Shales typically have porosity over many length-scales from the molecular up to macroscopic fractures. This work utilizes gas overcondensation to probe pore sizes from micropores to very large macropores all in the same experiment without the potential for damage due to high pressures when conducting mercury porosimetry. Indeed, the Bowland Shale samples studied here are generally inaccessible to mercury intrusion. The gas overcondensation method can also be augmented using scanning loops to assess the spatial juxtaposition of very different pore sizes, and this has been used to determine that some large macropores are shielded by pore necks less than 4 nm in size in the Bowland Shale. In addition, the adsorption calorimetry method has been used to assess the accessibility of the void space. It has been found that mass transport is limited by particular ‘hour-glass’-like pore necks that fill at quite low saturation, and thus present a barrier to molecular migration. The shielding of macroporosity by narrow necks was particularly significant for the Above Marine Band sample, with lower shielding observed in the Marine Band and Below Marine Band materials. |
| تدمد: | 2041-4927 0305-8719 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::51cb2d9e8108851b489d6bd457dded8d https://doi.org/10.1144/sp534-2021-97 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........51cb2d9e8108851b489d6bd457dded8d |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20414927 03058719 |
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