Investigating 3D geometry of porous media from high resolution images

We present spatial distributions for pore path length and coordination numb er, pore throat size and nodal pore volume obtained for a 1.5(3) mm(3) volu me of 12.1% porosity Fontainebleau sandstone. The sandstone was imaged usin g Synchrotron X-Ray computed microtomography at 6 micron resolution. The sp atial distributions were computed based upon three dimensional medial axis analysis of the void space in the image. We also present vesicle size and v esicle-vesicle contact surface area distributions for a 1.36 mm length of a 6.36 mm diameter core of basalt from a vesiculated lava flow imaged at 20 micron resolution. (C) 1999 Elsevier Science Ltd, All rights reserved.