Research Article
An Advanced Early-Stage Production Forecasting Model for Middle-High Rank Coal Development
Table 1
Statistical table of main coal seam characteristics in Panhe demonstration gas field.
| | Layer | Name of coal seam | Depth of coal seam (m) | Vitrinite reflectivity (%) | Formation pressure (MPa) | Langmuir pressure (MPa) | Langmuir volume (m3/t) | Permeability (mD) |
| | Upper Carboniferous Taiyuan Formation | 15# | 330~775 | 3.5~4.25 | 1.85~4.09 | 1.99~3.32 | 29.5~55.2 | 0.33~0.82 | | Lower Permian Shanxi Formation | 3# | 256~540 | 2.2~3.99 | 1.40~3.34 | 1.69~2.25 | 44.2~50.6 | 0.70~4.4 |
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