| Autor: |
Berg S; Shell Global Solutions International B.V., 2288 GS Rijswijk, The Netherlands. steffen.berg@shell.com, Ott H, Klapp SA, Schwing A, Neiteler R, Brussee N, Makurat A, Leu L, Enzmann F, Schwarz JO, Kersten M, Irvine S, Stampanoni M |
| Jazyk: |
angličtina |
| Zdroj: |
Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2013 Mar 05; Vol. 110 (10), pp. 3755-9. Date of Electronic Publication: 2013 Feb 19. |
| DOI: |
10.1073/pnas.1221373110 |
| Abstrakt: |
Newly developed high-speed, synchrotron-based X-ray computed microtomography enabled us to directly image pore-scale displacement events in porous rock in real time. Common approaches to modeling macroscopic fluid behavior are phenomenological, have many shortcomings, and lack consistent links to elementary pore-scale displacement processes, such as Haines jumps and snap-off. Unlike the common singular pore jump paradigm based on observations of restricted artificial capillaries, we found that Haines jumps typically cascade through 10-20 geometrically defined pores per event, accounting for 64% of the energy dissipation. Real-time imaging provided a more detailed fundamental understanding of the elementary processes in porous media, such as hysteresis, snap-off, and nonwetting phase entrapment, and it opens the way for a rigorous process for upscaling based on thermodynamic models. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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