Fast 4‐D Imaging of Fluid Flow in Rock by High‐Speed Neutron Tomography
| Autor: | Helen Lewis, Nikolay Kardjilov, Elli-Maria Christodoulos Charalampidou, Stephen Hall, Alessandro Tengattini, Gary Douglas Couples, Maddi Etxegarai, Erika Tudisco |
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| Rok vydání: | 2019 |
| Předmět: |
sandstone shear bands
010504 meteorology & atmospheric sciences Neutron tomography Mineralogy Geotechnical Engineering Deformation (meteorology) 01 natural sciences Medical Image Processing Geophysics Volume (thermodynamics) neutron tomography Space and Planetary Science Geochemistry and Petrology In situ analysis Earth and Planetary Sciences (miscellaneous) Fluid dynamics sandstone Neutron fluid flow characterization Flow process Geology 0105 earth and related environmental sciences |
| Zdroj: | 'Journal of Geophysical Research: Solid Earth ', vol: 124, pages: 3557-3569 (2019) Journal of Geophysical Research: Solid Earth; 124(4), pp 3557-3569 (2019) |
| ISSN: | 2169-9356 2169-9313 |
| Popis: | High‐speed neutron tomographies (1‐min acquisition) have been acquired during water invasion into air‐filled samples of both intact and deformed (ex situ) Vosges sandstone. Three‐dimensional volume images have been processed to detect and track the evolution of the waterfront and to calculate full‐field measurement of its speed of advance. The flow process correlates well with known rock properties and is especially sensitive to the distribution of the altered properties associated with observed localized deformation, which is independently characterized by Digital Volume Correlation of X‐ray tomographies acquired before and after the mechanical test. The successful results presented herein open the possibility of in situ analysis of the local evolution of hydraulic properties of rocks due to mechanical deformation. (Less) |
| Databáze: | OpenAIRE |
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