(a)
(b)
(c)
(d)
Figure 4: Typical capillary curve plotted with the mercury saturation of the tight clastic rock samples from Upper Triassic Chang 7 Member, Odors Basin. (a) The sample has high threshold pressure (z-8); (b) the sample has low threshold pressure and high mercury saturation (z-3); (c) the sample has low mercury saturation (z-11); (d) the sample has intermediate threshold pressure and mercury saturation (z-7).