Christoph H. Arns

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Elastic property-porosity relationships are derived directly from microtomographic images. This is illustrated for a suite of four samples of Fontainebleau sandstone with porosities ranging from 7.5% to 22%. A finite-element method is used to derive the elastic properties of digitized images. By estimating and minimizing several sources of numerical error,(More)
Nuclear magnetic resonance (NMR) diffusion-relaxation correlation experiments (D-T 2) are widely used for the petrophysical characterisation of rocks saturated with petroleum fluids both in situ and for laboratory analyses. The encoding for both diffusion and relaxation offers increased fluid typing contrast by discriminating fluids based on their(More)
The application of X-ray micro-computed tomography (μ-CT) for quantitatively characterizing reactive-flow induced pore structure evolution including local particle detachment, displacement and deposition in carbonate rocks is investigated. In the studies conducted in this field of research, the experimental procedure has involved alternating steps of(More)
X-ray tomography is an accurate and non-invasive technique that measures the internal 3D structure and composition of materials. To enhance and add predictive power to the collected data, various analysis techniques have been developed. In this paper, transport properties calculated directly from the pore space morphology are presented for 36 porous(More)
A microcomputed tomography (µCT) facility and computational infrastructure developed at the Department of Applied Mathematics at the Australian National University is described. The current experimental facility is capable of acquiring 3D images made up of 2000 3 voxels on porous specimens up to 60 mm diameter with resolutions down to 2 µm. This allows the(More)
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