Table 2
Reservoir thermal properties of the Guantao formation located in the Huanghua depression and Cangxian uplift zone in Tianjin [6].
| Thermal property parameters | Cangxian uplift | Huanghua depression zone |
|---|---|---|
| Top boundary (m) | 1112–1522 | 1152–1788 |
| Bottom boundary (m) | 1137–2277 | 1278–2847 |
| Thickness (m) | 24–755 | 126–1059 |
| Thickness ratio of sandstone and mudstone layer | 0.21–0.64 | 0.55–0.64 |
| Porosity (%) | 18–36.6 | 31.5–36.6 |
| Permeability coefficient (m/d) | 0.67–1.27 | 0.37–1.71 |
| Fluid temperature at the wellhead (°C) | 45–81 | 42–78 |
| Water production rate (m3/h) | 40–60 | 80–120 |
| Chemistry of the fluid | HCO3–Cl–Na | HCO3–Na, HCO3–Cl–Na |
| SO–Cl–Na | ||
| TDS (g/L) | 1–6 | 1–1.9 |