Experimental investigation of changes in petrophysical properties and structural deformation of carbonate reservoirs

SALIMIDELSHAD Yaser,MORADZADEH Ali,KAZEMZADEH Ezatallah,POURAFSHARY Peyman,MAJDI Abbas

Table 2 Numerical values of pore volume and permeability variations for samples A and B.

Experimental step Loading pressure/ MPa Sample A Sample B Permeability reduction at each step/% Pore volume reduction at each step/% Permeability reduction at each step/% Pore volume reduction at each step/% Before loading 0 0 0 0 0 Step 1 13.79 0.44 1.62 7.23 1.78 Step 2 27.58 3.89 3.15 24.04 4.20 Step 3 13.79 -3.15 1.18 3.19 2.19 Step 4 27.58 3.27 2.14 10.30 2.01 Step 5 13.79 0.31 0.99 9.80 2.74 Step 6 27.58 2.30 1.32 5.28 2.14