Research Article

Pressure Analysis for Volume Fracturing Vertical Well considering Low-Velocity Non-Darcy Flow and Stress Sensitivity

Table 1

Parameters used in the comparison.

ParameterValue

Radius of reservoir under vertical well controlling (cm)10000
Radius of SRV (cm)1000
Radius of vertical well (cm)12.4
Reservoir thickness (cm)600
Reservoir permeability (mD)0.23
Reservoir porosity0.15
Porosity of fracture in the SRV0.02
Reservoir compression factor ((105 Pa)-1)0.0038
Compression factor of fracture in the SRV ((105 Pa)-1)0.0056
Fluid compression factor ((105 Pa)-1)0.006
Fluid viscosity (mPa·s)5.6
Fluid density (g/cm3)0.8
Initial pressure (105 Pa)300
Total grid number20
Grid number of SRV13
Permeability modulus of reservoir ((105 Pa)-1)0
Pseudothreshold pressure gradient (105 Pa/cm)0
Well flow rate (cm3/s)300