Numerical Well Testing Interpretation Model and Applications in Crossflow Double-Layer Reservoirs by Polymer Flooding

Table 7

Basic parameters of well and reservoir for 5-225 field test.

Injection rate	𝑞 (m^3/d)	136
Layer 1 thickness	ℎ1 (m)	12
Layer 2 thickness	ℎ2 (m)	9
Oil volume factor	𝐵0	1.1037
Porosity	𝜙	0.25
Crude oil viscosity	𝜇𝑜 (mPa·s)	14.2
Brine viscosity	𝜇𝑤 (mPa·s)	0.5
Temperature	°C	75
Total compressibility	𝐶𝑡 (1/MPa)	0.0014
Well radius	𝑟𝑤 (m)	0.1
Layer 1 permeability before polymer flooding	mD	1352
Layer 2 permeability before polymer flooding	mD	211
Layer 1 skin factor before polymer flooding	n/a	2.49
Layer 2 skin factor before polymer flooding	n/a	0.37