Table 1 Reservoir properties of the base model.

Rock density

2613 kg/m³

Rock porosity

2.0%

Rock permeability(kx = ky = kz)

3.80 × 10^–16 m²

Rock thermal conductivity

3.33 W/(m⋅K)

Rock specifific heat capacity

730 J/(kg⋅K)

Fracture porosity

50%

Fracture permeability, (kx = ky = kz)

1.0 × 10^–11 m²

Initial reservoir temperature

T = 214.0 − 0.068z (℃)

Initial reservoir pressure

P = 4.6 × 10⁷⁻10000z (Pa)

Productivity index

5.0 × 10^–12 m³

Bottom-hole production pressure

42 MPa

Operation time

50 years