The use of high-resolution X-ray CT for the quantification of fluid-flow properties of sandstone

• Autorzy: Cnudde V. , Vlassenbroeck J. , Verschueren P. , Lewis R.
• Konferencja: Geopetrol 2010 : nowe metody i technologie zagospodarowania złóż i wydobycia węglowodorów w warunkach lądowych i morskich : międzynarodowa konferencja naukowo-techniczna : Zakopane, 20--23.09.2010
• Języki publikacji: EN

Abstrakty

EN

X-ray tomography has been applied for the non-destructive investigation of geomaterials since several years, but it is only recently that high-resolution X-ray CT (HRXCT) scanners have been developed which are able to capture a 3D image at a micrometer scale or less. These insights can be used for the study of extraction of fossil fuels from porous rock formations. It is only because of the combination of state-of-the-art CT scanners and advanced modeling and simulation software algorithms that this type of in-depth studies can be performed. In this particular research we illustrate the combination of state-of-the-art HRXCT scanners and modeling software in the simulation of fluid flow through a Belgian sandstone (Bray). [figure]. First, we discuss the HRXCT equipment and protocol used resulting in an isotropic voxel size of 6 µm. Next, we discuss the various steps in the quantification of the fluid-flow properties of a piece of the Bray sandstone. From the 2D image stack a 3D surface mesh model is generated. The surface mesh is optimized further and from that a 3.6 million cells hex-dominant volume mesh including 2 boundary layers is calculated. Boundary conditions and input include closing of top and bottom surfaces and a water inlet speed of 50 µm/s. Results show mostly laminar flow with significant pressure drops in the pore throats. The obtained results and conclusions give an outlook on how these results can help geologists in understanding the physics of fluid flow through porous rocks or systems in general.

Słowa kluczowe

EN

X-ray tomography; fluid-flow properties; sandstones

• Wydawca: Instytut Nafty i Gazu - Państwowy Instytut Badawczy
• Czasopismo: Prace Naukowe Instytutu Nafty i Gazu
• Rocznik: 2010
• Tom: nr 170 wyd. konferencyjne
• Strony: 149--150
• Opis fizyczny: rys.

Twórcy

autor

Cnudde V.

• Department of Geology and Soil Science, Ghent University, Belgium inCT, IIC UGent, Technologiepark 3, 8-9052 Zwijnaarde, Belgium

autor

Vlassenbroeck J.

• inCT, IIC UGent, Technologiepark 3, 8-9052 Zwijnaarde, Belgium

autor

Verschueren P.

• Materialise NV, Technologielaan 15, B-3001 Heverlee, Belgium

autor

Lewis R.

• TotalSim Ltd, Brackley, Northampshire NN13 7XY, UK