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X-ray imaging and analysis techniques for quantifying pore-scale structure and processes in subsurface porous medium systems

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https://ir.library.oregonstate.edu/concern/articles/3r074v615

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Abstract
  • We report here on recent developments and advances in pore-scale x-ray tomographic imaging of subsurface porous media. Our particular focus is on immiscible multi-phase fluid flow, i.e., the displacement of one immiscible fluid by another inside a porous material, which is of central importance to many natural and engineered processes. Multiphase flow and displacement can pose a rather difficult problem, both because the underlying physics is complex, and also because standard laboratory investigation reveals little about the mechanisms that control micro-scale processes. X-ray microtomographic imaging is a non-destructive technique for quantifying these processes in three dimensions within individual pores, and as we report here, with rapidly increasing spatial and temporal resolution.
  • Keywords: X-ray tomography, Porous media characterization, Image analysis and quantification, Multi-phase flow
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  • Wildenschild, D., & Sheppard, A. P. (2013). X-ray imaging and analysis techniques for quantifying pore-scale structure and processes in subsurface porous medium systems. Advances in Water Resources, 51, 217-246. doi: 10.1016/j.advwatres.2012.07.018
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  • 51
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  • Wildenschild acknowledges financial support from DOE’s Subsurface Biogeochemical Research Program (DE-FG02-09ER64734) grant ER64734-1032845-0014978; from NSF’s CDI Program (EAR-0941299); and from the Donors of the American Chemical Society Petroleum Research Fund, grant no. 48505-AC9. Sheppard acknowledges support from an Australian Research Council Future Fellowship (FT100100470)
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