Quantifying Fractal Dimension in Integrated Experimental Data of Tight Sandstones

Figure 4

Double logarithmic plots of wetting phase saturation versus capillary pressure from PCMI experiments: type I of (a) intrusion and (c) extrusion branches from three typical specimens; type II of (b) intrusion and (d) extrusion branches from S22 and S95, respectively. : fractal dimension values from intrusion branches of PCMI tests or large fractal pore set; : small fractal pore set; : fractal dimension values from extrusion branches of PCMI tests or large fractal throat set; : small fractal throat set.

(a)

(b)

(c)

(d)