Table 3 Simulation parameters.
From: Analysis of the impact of CO2 injection on fracturing fluid flowback in shale gas wells
Basic parameters | Well H1 | Basic parameters | Well H1 |
|---|---|---|---|
Tubing inner diameter (mm) | 62 | Borehole diameter (mm) | 431.8 |
Tubing wall thickness (mm) | 7 | Artificial bottom Hole (m) | 2867.80 |
tubing steel grade | N80 | Bottom-hole temperature (℃) | 92.77 |
Surface casing inner diameter (mm) | 157.08 | Wellhead pressure (MPa) | 6 |
Surface casing wall thickness (mm) | 10.36 | Wellhead temperature (℃) | 15 |
Surface casing depth (m) | 567.47 | Formation temperature gradient (℃/100 m) | 2.97 |
Gas layer casing inner diameter (mm) | 108.62 | Pressure Gradient (MPa/m) | 0.00506 |
Gas layer casing wall thickness (mm) | 9.19 | Relative Density of Natural Gas (kg/m3) | 0.5756 |
Gas layer casing depth (m) | 2874.95 | Natural Gas Compressibility Factor (Z) | 0.5756 |
Casing steel grade | P110 | Gas Injection Temperature (℃) | 15 |
Tubing and casing wall roughness (mm) | 0.0254 |
