Xenon NMR Measurements of Permeability and Tortuosity in Reservoir Rocks
Abstract
In this work we present measurements of permeability, effective porosity and tortuosity on a variety of rock samples using NMR/MRI of thermal and laser-polarized gas. Permeability and effective porosity are measured simultaneously using MRI to monitor the inflow of laser-polarized xenon into the rock core. Tortuosity is determined from measurements of the time-dependent diffusion coefficient using thermal xenon in sealed samples. The initial results from a limited number of rocks indicate inverse correlations between tortuosity and both effective porosity and permeability. Further studies to widen the number of types of rocks studied may eventually aid in explaining the poorly understood connection between permeability and tortuosity of rock cores.
- Publication:
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Proceedings of the Seventh International Meeting on Recent Advances in MR Applications to Porous Media
- Pub Date:
- July 2004
- DOI:
- 10.48550/arXiv.cond-mat/0407710
- arXiv:
- arXiv:cond-mat/0407710
- Bibcode:
- 2004mapm.proc..OP5W
- Keywords:
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- Condensed Matter - Materials Science
- E-Print:
- 9 pages, includes 3 figures. submitted for publication in MaIn this work we present measurements of permeability, effective porosity and tortuosity on a variety of rockgnetic Resonance Imaging