Figure 7
From: Permeability regain and aqueous phase migration during hydraulic fracturing shut-ins
T2 spectrum shift during shut-ins period, drawn in a semi-logarithmic coordinate system. (a) Core sample cq002-1; (b) core sample cq002-2. After different length of shut-ins periods, (1) T2 spectrum curves shift towards left side, (2) T2 amplitude at small intervals increasing.
