Figure 1
From: Study of Gas Flow Characteristics in Tight Porous Media with a Microscale Lattice Boltzmann Model

Reconstruction of the digital rocks.
(a) SEM scanning image of a shale rock from Sichuan Basin, China. The size of the image is 1280 × 960 and the resolution is 2.825 nm per pixel. (b) Shale digital rock (80 × 80 × 86). (c) Sandstone digital rock (80 × 80 × 86). The blue part is the pore space and the green part is solid.