Research Article
Reservoir Characterization during Underbalanced Drilling of Horizontal Wells Based on Real-Time Data Monitoring
Table 1
Basic parameters for reservoir and drilling fluid used in reservoir characterization.
| | Depth evaluation of the reservoir, m | 4156 | | Reservoir thickness, m | 15 | | Porosity, % | 12 | | Reservoir fluid volume factor, m3/std.m3 | 0.008 | | Reservoir fluid viscosity, mPa·s | 0.035 | | Reservoir compressibility, Pa−1 | 1.16 × 10−9 | | Reservoir fluid compressibility, Pa−1 | 11.77 × 10−9 | | Geothermal temperature, K·m−1 | 0.03 | | Drilling fluid density at standard conditions, g·cm−3 | 1.04 | | Drilling fluid viscosity at standard conditions, mPa·s | 20 | | Injection gas specific gravity, 1 | 0.97 | | Injection gas viscosity at standard conditions, mPa·s | 0.019 |
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