Prediction Model of Rate Decline for Acid-Fracturing Vertical Wells in Pore-Cavity-Fracture Carbonate Reservoirs

Table 4

Fitting results of relevant parameters for CT-2.

Basic parameters	Value	Basic parameters	Value
Radius of stimulated area/m	18.5	Fracture elastic storability ratio/%	3
Reservoir radius/m	380	Matrix elastic storability ratio/%	91
Natural fracture permeability/10^-3μm^2	27.7	Cavity elastic storability ratio/%	6
Skin factor/dimensionless	1.13	Matrix-fracture crossflow coefficient/dimensionless	0.0005
Interzonal diffusivity ratio/fraction	0.004	Matrix-cavity crossflow coefficient/dimensionless	0.02
Interzonal conductivity ratio/fraction	0.45	Cavity-fracture crossflow coefficient/dimensionless	0.4