Research Article
Role of Gas Viscosity for Shale Gas Percolation
Table 1
Basic parameters of shale reservoir and shale gas [
27,
28].
| Symbol | Value | Unit | Description |
| | 333.15 | K | Reservoir temperature | | 400 | m | Length of reservoir | | 480 | m | Width of reservoir | | 38 | m | Thickness of reservoir | | 0.002 | m | Natural fracture width | | 0.005 | m | Artificial fracture width | | | μm2 | Matrix permeability | | | μm2 | Natural fracture permeability | | | μm2 | Artificial fracture permeability | | | MPa-1 | Matrix compressibility | | | MPa-1 | Natural fracture compressibility | | | MPa-1 | Artificial fracture compressibility | | 2 | % | Matrix porosity | | 0.4 | % | Natural fracture porosity | | 0.4 | % | Artificial fracture porosity | | 30 | MPa | Initial reservoir pressure | AS | 3 | — | Artificial fracture number | | 200 | m | Half length of artificial fracture | | 3000 | m3/d | Half gas flow rate | | 0.717 | kg/m3 | Gas density at standard conditions | | 176.794 | kg/m3 | Gas density at reservoir conditions | | 2 | m3/t | Langmuir volume | | 10 | MPa | Langmuir pressure | | 8.34 | J/(K·mol) | Universal gas constant | | 16 | g/mol | Molecular weight of methane | | 0.76 | m-2 | Shape factor |
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