Estimating Dispersion Coefficient in Flow Through Heterogeneous Porous Media by a Deep Convolutional Neural Network

Abstract

Abstract Estimating the longitudinal dispersion coefficient in flow through heterogeneous porous media is paramount to many problems in geological formations. Moreover, although it is well‐known that is sensitive to the morphology of such formations, it has been very difficult to establish a firm link between the two. We describe a novel deep convolutional neural network (DCNN) for estimating . The inputs for training of the network are a large and diverse set of data consisting of three‐dimensional images of porous media, as well as their porosity, and the associated values computed by random‐walk particle‐tracking (RWPT) simulations. The trained network predicts very rapidly, and its predictions are in excellent agreement with the data not used in the training. Thus, a combination of the DCNN and RWPT simulation provides a powerful tool for studying many flow‐related phenomena in geological formations, and estimating their properties.