Figure 8: The correlation of throat and permeability of the samples from the Upper Triassic Chang 7 Member, Odors Basin. (a) Correlation of standard variation coefficient of the throat radii and permeability; (b) the curve of throat radii and the permeability value that result from, correspondingly, the three curve presenting high, low, and intermediate standard deviation coefficient, which stand for high, low, and intermediate heterogeneity degree of the throat radii in mathematical distribution.