| Autor: |
Maja Rücker, Apostolos Georgiadis, Ryan T. Armstrong, Holger Ott, Niels Brussee, Hilbert van der Linde, Ludwig Simon, Frieder Enzmann, Michael Kersten, Steffen Berg |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Frontiers in Water, Vol 3 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2624-9375 |
| DOI: |
10.3389/frwa.2021.671399 |
| Popis: |
Core flooding experiments to determine multiphase flow in properties of rock such as relative permeability can show significant fluctuations in terms of pressure, saturation, and electrical conductivity. That is typically not considered in the Darcy scale interpretation but treated as noise. However, in recent years, flow regimes that exhibit spatio-temporal variations in pore scale occupancy related to fluid phase pressure changes have been identified. They are associated with topological changes in the fluid configurations caused by pore-scale instabilities such as snap-off. The common understanding of Darcy-scale flow regimes is that pore-scale phenomena and their signature should have averaged out at the scale of representative elementary volumes (REV) and above. In this work, it is demonstrated that pressure fluctuations observed in centimeter-scale experiments commonly considered Darcy-scale at fractional flow conditions, where wetting and non-wetting phases are co-injected into porous rock at small ( |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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