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Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales
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| Zeitschriftentitel: | Water Resources Research |
|---|---|
| Personen und Körperschaften: | , |
| In: | Water Resources Research, 56, 2020, 2 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Geophysical Union (AGU)
|
| Schlagwörter: |
| author_facet |
Wang, Ziyan Battiato, Ilenia Wang, Ziyan Battiato, Ilenia |
|---|---|
| author |
Wang, Ziyan Battiato, Ilenia |
| spellingShingle |
Wang, Ziyan Battiato, Ilenia Water Resources Research Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales Water Science and Technology |
| author_sort |
wang, ziyan |
| spelling |
Wang, Ziyan Battiato, Ilenia 0043-1397 1944-7973 American Geophysical Union (AGU) Water Science and Technology http://dx.doi.org/10.1029/2019wr025960 <jats:title>Abstract</jats:title><jats:p>A major challenge in modeling reactive transport in shales is the multiscale nature of the fractured rock system. Shales may contain a few main fractures and thousands of microcracks whose length and aperture are orders of magnitude smaller than the former. This renders fully resolved simulations too expensive, while traditional upscaling methods cannot accurately capture fracture clogging dynamics due to precipitation. We develop a fully coupled patch‐based multiscale algorithm to address this issue: We solve reactive transport only in a few selected microcracks, while evaluating the others by interpolation and ensuring top‐down bottom‐up coupling between the main fracture and the microcracks. Specifically, we consider a fracture system with an array of hundreds of microcracks connected to a main fracture. The patch‐based multiscale algorithm is validated against fully resolved pore‐scale simulations and a steady‐state analytical solution. We find the reaction rate can have a great impact on the concentration profiles after breakthrough, even if the profiles before breakthrough are similar. Also, the breakthrough curves exhibit three dynamic regimes when microcrack aperture alterations are accounted for.</jats:p> Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales Water Resources Research |
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| title |
Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales |
| title_unstemmed |
Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales |
| title_full |
Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales |
| title_fullStr |
Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales |
| title_full_unstemmed |
Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales |
| title_short |
Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales |
| title_sort |
patch‐based multiscale algorithm for flow and reactive transport in fracture‐microcrack systems in shales |
| topic |
Water Science and Technology |
| url |
http://dx.doi.org/10.1029/2019wr025960 |
| publishDate |
2020 |
| physical |
|
| description |
<jats:title>Abstract</jats:title><jats:p>A major challenge in modeling reactive transport in shales is the multiscale nature of the fractured rock system. Shales may contain a few main fractures and thousands of microcracks whose length and aperture are orders of magnitude smaller than the former. This renders fully resolved simulations too expensive, while traditional upscaling methods cannot accurately capture fracture clogging dynamics due to precipitation. We develop a fully coupled patch‐based multiscale algorithm to address this issue: We solve reactive transport only in a few selected microcracks, while evaluating the others by interpolation and ensuring top‐down bottom‐up coupling between the main fracture and the microcracks. Specifically, we consider a fracture system with an array of hundreds of microcracks connected to a main fracture. The patch‐based multiscale algorithm is validated against fully resolved pore‐scale simulations and a steady‐state analytical solution. We find the reaction rate can have a great impact on the concentration profiles after breakthrough, even if the profiles before breakthrough are similar. Also, the breakthrough curves exhibit three dynamic regimes when microcrack aperture alterations are accounted for.</jats:p> |
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| author | Wang, Ziyan, Battiato, Ilenia |
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| description | <jats:title>Abstract</jats:title><jats:p>A major challenge in modeling reactive transport in shales is the multiscale nature of the fractured rock system. Shales may contain a few main fractures and thousands of microcracks whose length and aperture are orders of magnitude smaller than the former. This renders fully resolved simulations too expensive, while traditional upscaling methods cannot accurately capture fracture clogging dynamics due to precipitation. We develop a fully coupled patch‐based multiscale algorithm to address this issue: We solve reactive transport only in a few selected microcracks, while evaluating the others by interpolation and ensuring top‐down bottom‐up coupling between the main fracture and the microcracks. Specifically, we consider a fracture system with an array of hundreds of microcracks connected to a main fracture. The patch‐based multiscale algorithm is validated against fully resolved pore‐scale simulations and a steady‐state analytical solution. We find the reaction rate can have a great impact on the concentration profiles after breakthrough, even if the profiles before breakthrough are similar. Also, the breakthrough curves exhibit three dynamic regimes when microcrack aperture alterations are accounted for.</jats:p> |
| doi_str_mv | 10.1029/2019wr025960 |
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| spelling | Wang, Ziyan Battiato, Ilenia 0043-1397 1944-7973 American Geophysical Union (AGU) Water Science and Technology http://dx.doi.org/10.1029/2019wr025960 <jats:title>Abstract</jats:title><jats:p>A major challenge in modeling reactive transport in shales is the multiscale nature of the fractured rock system. Shales may contain a few main fractures and thousands of microcracks whose length and aperture are orders of magnitude smaller than the former. This renders fully resolved simulations too expensive, while traditional upscaling methods cannot accurately capture fracture clogging dynamics due to precipitation. We develop a fully coupled patch‐based multiscale algorithm to address this issue: We solve reactive transport only in a few selected microcracks, while evaluating the others by interpolation and ensuring top‐down bottom‐up coupling between the main fracture and the microcracks. Specifically, we consider a fracture system with an array of hundreds of microcracks connected to a main fracture. The patch‐based multiscale algorithm is validated against fully resolved pore‐scale simulations and a steady‐state analytical solution. We find the reaction rate can have a great impact on the concentration profiles after breakthrough, even if the profiles before breakthrough are similar. Also, the breakthrough curves exhibit three dynamic regimes when microcrack aperture alterations are accounted for.</jats:p> Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales Water Resources Research |
| spellingShingle | Wang, Ziyan, Battiato, Ilenia, Water Resources Research, Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales, Water Science and Technology |
| title | Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales |
| title_full | Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales |
| title_fullStr | Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales |
| title_full_unstemmed | Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales |
| title_short | Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales |
| title_sort | patch‐based multiscale algorithm for flow and reactive transport in fracture‐microcrack systems in shales |
| title_unstemmed | Patch‐Based Multiscale Algorithm for Flow and Reactive Transport in Fracture‐Microcrack Systems in Shales |
| topic | Water Science and Technology |
| url | http://dx.doi.org/10.1029/2019wr025960 |