Research Article

Research on the Characteristics of Microscopic Damage to Different Pore Types by Slippery Water Fracturing Fluid in the Chang Member Tight Sandstone Reservoir, Ordos Basin, NW China

Figure 2

Variations in the pore volume of cores at different times (Note: (a) snapshot after saturation with formation water; (b) 9 h after fracturing fluid invasion; (c) 24 h after fracturing fluid invasion; (d) 72 h after fracturing fluid invasion; (e) 24 h after subsequent water flooding).
(a)
(b)
(c)
(d)
(e)