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)
Obtaining accurate estimates of elastic properties of disordered materials has been a problem of interest for decades. Recent advances in 3D computed tomography and numerical simulations have led to a new digital approach.
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)
In this work, the aim is to assess the relative importance of the impact of diffusional coupling on NMR measurements of saturated laminated sandstone numerically at the layer scale to assess the feasibility of NMR rock-typing approaches. We use two 3D model structures based on a Boolean particle process, providing a range of structural to diffusion length… (More)
We use the propagator-resolved transverse relaxation exchange experiment to characterize the pore space and fluid behavior of water saturated, tight-packed quartz sand. The experiment uses T2 exchange plots to observe the number of molecules that shift their environment for a range of mixing times. The propagator dimension allows us to determine how far the… (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)