Estimates of permeability of porous materials using image analysis of cross sections.

摘要

An image processing method was developed, based on statistical properties of the microgeometry in images of cross sections of the material. The method uses a simple statistical function called the spatial correlation function, which can be used to predict bounds on permeability and other physical properties, along with porosity and specific surface area. This paper discusses the two-point spatial correlation function and its use in characterizing rock microstructure found in images of several different sandstones. Permeability is estimated for several of these sandstones, compared to measured data, and extension to multiphase flow is discussed. 8 figs, 1 tab, 14 refs.