Zeeb, C. ; Göckus, D. ; Bons, P. ; Ajmi, H. al ; Rausch, R. ; Blum, P. (2010)
Fracture flow modelling based on satellite images of the Wajid sandstone, Saudi Arabia.
In: Hydrogeology Journal, 18 (7)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Large-scale geological features have been identified by satellite imagery and global positioning system data in the Wajid Sandstone in Saudi Arabia. The main objective is to evaluate the importance of fractures for the overall flow behaviour in this fractured rock aquifer and to estimate in-situ hydraulic apertures. Data on fractures and lineaments were available for three outcrops. By applying a “cut-out” routine on the fracture endpoint data of these fracture trace windows, three deterministic discrete fracture networks (DFN), with an area of 100 m × 100 m, could be generated. These were used to simulate the fracture flow and to determine the hydraulic conductivity tensors. Using additional data on hydraulic pumping tests and matrix conductivities, in-situ hydraulic apertures could be determined. Average in-situ hydraulic apertures range from 1,300 to 1,700 µm. Observations from the field support these results. In addition, a hydraulic conductivity ratio between the matrix and fracture system was used to identify the contribution of the DFN to the overall fluid transport. A ratio of 10.4 was determined, which indicates that the effective flow behaviour in the Wajid Sandstone aquifer is not entirely dominated by the fracture system, though evidently strongly controlled by it.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2010 |
| Autor(en): | Zeeb, C. ; Göckus, D. ; Bons, P. ; Ajmi, H. al ; Rausch, R. ; Blum, P. |
| Art des Eintrags: | Bibliographie |
| Titel: | Fracture flow modelling based on satellite images of the Wajid sandstone, Saudi Arabia |
| Sprache: | Englisch |
| Publikationsjahr: | 2010 |
| Verlag: | SpringerLink |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Hydrogeology Journal |
| Jahrgang/Volume einer Zeitschrift: | 18 |
| (Heft-)Nummer: | 7 |
| URL / URN: | https://link.springer.com/article/10.1007/s10040-010-0609-x |
| Kurzbeschreibung (Abstract): | Large-scale geological features have been identified by satellite imagery and global positioning system data in the Wajid Sandstone in Saudi Arabia. The main objective is to evaluate the importance of fractures for the overall flow behaviour in this fractured rock aquifer and to estimate in-situ hydraulic apertures. Data on fractures and lineaments were available for three outcrops. By applying a “cut-out” routine on the fracture endpoint data of these fracture trace windows, three deterministic discrete fracture networks (DFN), with an area of 100 m × 100 m, could be generated. These were used to simulate the fracture flow and to determine the hydraulic conductivity tensors. Using additional data on hydraulic pumping tests and matrix conductivities, in-situ hydraulic apertures could be determined. Average in-situ hydraulic apertures range from 1,300 to 1,700 µm. Observations from the field support these results. In addition, a hydraulic conductivity ratio between the matrix and fracture system was used to identify the contribution of the DFN to the overall fluid transport. A ratio of 10.4 was determined, which indicates that the effective flow behaviour in the Wajid Sandstone aquifer is not entirely dominated by the fracture system, though evidently strongly controlled by it. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Angewandte Sedimentgeologie |
| Hinterlegungsdatum: | 27 Jan 2010 14:36 |
| Letzte Änderung: | 12 Aug 2021 08:24 |
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