Understanding the micro structure of Berea Sandstone by the simultaneous use of micro-computed tomography (micro-CT) and focused ion beam-scanning electron microscopy (FIB-SEM)
| Autor: | Bijoyendra Bera, Douglas Vick, Sushanta K. Mitra |
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| Rok vydání: | 2010 |
| Předmět: |
Materials science
Hydrocarbon fuel Scanning electron microscope Focused ion beams General Physics and Astronomy Mineralogy Imaging techniques Sandstone Focused ion beam Electron beam computed tomography law.invention Matrix (geology) Geological materials Structural Biology law Micro computed tomography (micro-CT) Berea sandstone General Materials Science Porous materials Focused ion beam-scanning electron microscopies Porosity Microstructure Micropores Interconnected pores Cell Biology CT Image FIB-SEM matrix Characterization (materials science) Bulk materials SEM Reservoir rock Three-dimensional pores Tomography Electron microscope Simultaneous use |
| Zdroj: | Micron (Oxford, England : 1993). 42(5) |
| ISSN: | 1878-4291 |
| Popis: | Berea sandstone is the building block for reservoirs containing precious hydrocarbon fuel. In this study, we comprehensively reveal the microstructure of Berea sandstone, which is often treated as a porous material with interconnected micro-pores of 2. -5μm. This has been possible due to the combined application of micro-computed tomography (CT) and focused ion beam (FIB)-scanning electron microscopy (SEM) on a Berea sample. While the use of micro-CT images are common for geological materials, the clubbing and comparison of tomography on Berea with state-of-the-art microstructure imaging techniques like FIB-SEM reveals some unforeseen features of Berea microstructure. In particular, for the first time FIB-SEM has been used to understand the micro-structure of reservoir rock material like Berea sandstone. By using these characterization tools, we are able to show that the micro-pores (less than 30μm) are absent below the solid material matrix, and that it has small interconnected pores (30-40μm) and large crater-like voids (100-250μm) throughout the bulk material. Three-dimensional pore space reconstructions have been prepared from the CT images. Accordingly, characterization of Berea sandstone specimen is performed by calculation of pore-structure volumes and determination of porosity values. © 2010 Elsevier Ltd. |
| Databáze: | OpenAIRE |
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