Fluid Flow In Porous Media: NMR Imaging And Numerical Simulation

摘要

We use nuclear magnetic resonance (NMR) imaging to obtain a three-dimensional imageof the pore structure in a limestone core, 4.5 mm in diameter and 10 mm in length, witha resolution of 40 μm. This image is converted into boundary conditions for simulationof fluid flow through the rock using the lattice gas method. The computed permeabilityis several orders of magnitude lower than the laboratory measured permeability, mostlikely a result of the image resolution being too coarse to resolve the smaller pore throats, which are believed to be significant for flow in this sample.