March 29, 2017

Download Applications of X-ray computed tomography in the geosciences by Geological Society Publications PDF

By Geological Society Publications

X-ray computed tomography (CT) is a method that enables non-destructive imaging and quantification of inner good points of items. It used to be initially built as a scientific imaging process, however it is now additionally turning into familiar for the research of fabrics in engineering and the geosciences. X-ray CT unearths adjustments in density and atomic composition and will consequently be used for the learn of porosity, the relative distribution of contrasting good levels and the penetration of injected suggestions. As a non-destructive procedure, it really is very best for tracking of tactics, comparable to the circulate of ideas and the behaviour of fabrics lower than compression. simply because huge numbers of parallel two-dimensional cross-sections might be acquired, three-d representations of chosen positive aspects may be created. during this publication, a number of functions of X-ray CT within the geosciences are illustrated by means of papers masking quite a lot of disciplines, together with petrology, soil technological know-how, petroleum geology, geomechanics and sedimentology.

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P. A. 1990. Direct measurement of the constituent porosities in a dual porosity matrix. In: Society of Core Analysts Conference Proceedings, Paper 9003. NAKASHIMA, Y. 2000. The use of X-ray CT to measure diffusion coefficients of heavy ions in watersaturated porous media. Engineering Geology, 56, 11-17. , FLOHR, T. & KLINGENBECK-REGN, K. 1999. Efficient object scatter correction algorithm for third and fourth generation CT scanners. European Radiology, 9, 563-569. PETERS, EJ. D. 1990. Visualization of fluid displacements in heterogeneities in porous media using computed tomography imaging.

Sedgwick & Dixon (1988) compared three X-ray-based techniques for measuring fluid saturations: singlebeam attenuation, xeroradiography and CT. They concluded that the methods gave similar results, but that the advantage of CT was fine resolution on the millimetre scale. Additionally, three-dimensional images can be generated by interpolating among cross-sectional images. CT scanners are classified according to the placement of the source-detector combination. First generation scanners used a source and three to six detectors.

Transport in nation of relative permeability for steam-water Porous Media, 39, 347-366. flow in porous media. B. & JELEN, J. 1986. Displacement of heavy oil visualized by CAT scan. In: Proceedings Conference and Exhibition, Denver, Colorado, of the 37th Annual Technical Meeting of the 6-9 October, Paper SPE 36682. Petroleum Society of CIM, Calgary, 8-11 June, AMERICAN PETROLEUM INSTITUTE 1960. API Recom605-620. mended Practice for Core Analysis Procedures. A. & SEPEHRNOORI, K. 1991. SimuReport 40.

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