| Autor: |
Laura J. Pyrak-Nolte, Christopher Petrovitch, Shiyu Xu, Weiwei Li, Enru Liu |
| Rok vydání: |
2008 |
| Předmět: |
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| Zdroj: |
SEG Technical Program Expanded Abstracts 2008. |
| DOI: |
10.1190/1.3059392 |
| Popis: |
Mixed chemical and clastic sedimentary processes form carbonate rock with fine bedding that results in a weakly directed fabric. Laboratory experiments were performed to determine the effect of fabric-controlled layering on compressional and shear wave propagation. X-ray tomographic scans of the sample found a density variation among the layers that ranged from 1700 kg/m 3 to 2300 kg/m 3 in a cubic sample 100 mm on edge. Wavefront imaging results show that the density contrasts among the layers produced energy confinement. The amplitude and arrival time of the compressional and shear waves are affected by saturation of the sample with water, i.e., by changing the impedance contrast among the layers. Seismic monitoring of the fluid-front during saturation indicates that the fine bedding also affects the hydraulic properties of the sample. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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