Quantification of Pore Size and Movable Fluid Distribution in Zhangjiatan Shale of the Ordos Basin, China

Figure 6

Method for calculating cutoff values and differentiating pore fluids using incremental and cumulative spectral curves. The red solid curves with dots and solid curves represent the incremental and cumulative spectrum under 100% brine-saturated condition. The blue solid curves with dots and solid curves represent the incremental and cumulative spectrum after centrifugation at 12000 rpm. The green solid curves with dots and solid curves represent the incremental and cumulative spectrum after heating to the threshold temperature.