sandstones can be created using one of two approaches. The
first approach employs process-based models that begin
with an unconsolidated packing and then mimic various
diagenetic processes (Keehm et al., The Leading Edge,
Feb. 2001; Oren and Bakke, TiPM, 46, 2002). The
advantages of process-based models are that they remain
tied to the underlying geology and that they can be used
to generate much larger domains. The second approach
employs direct reconstruction of voxel images using
algorithms such as simulated annealing. The advantage to
voxel-based techniques is that they are more general in
their ability to capture a variety of pore morphologies.
The image on the left is a voxel-based reconstruction that
matches pore and solid-phase statistics from a real
material. The image on the right is a simulated sandstone
created from a simple process-based model.