Research Article
Well Performance Simulation and Parametric Study for Different Refracturing Scenarios in Shale Reservoir
Table 1
Reservoir and wellbore geometry parameters for the simulation model.
| | Parameter | Symbol | Value | Units |
| | Well radius | | 0.1 | m | | Bottomhole flowing pressure | | 15 | MPa | | Initial reservoir pressure | | 20 | MPa | | Transient shape factor | | 8 | 1/m2 | | Pseudosteady state shape factor | | 1 | 1/m2 | | Initial porosity | | 0.05 | — | | Natural fracture porosity | | 0.001 | — | | Portion of kerogen grain volume in total shale core grain volume | | 0.1 | — | | Inorganic matrix permeability | | 1 × 10−7 | μm2 | | Elastic modulus | | 22 | GPa | | Poisson ratio | | 0.2 | — | | Initial conductivity of hydraulic fractures | | 0.1 | D·cm | | Hydraulic fracture half-length | | 70 | m | | Maximum principal stress | | 40 | MPa | | Minimum principal stress | | 36 | MPa | | Reservoir thickness | | 50 | m | | Langmuir volume | | 3 × 10−3 | m3/kg | | Langmuir pressure | | 6 | MPa | | Molecular mass | | 0.016 | kg/mol | | Surface diffusion coefficient | | 1 × 10−7 | m2/s | | Length of horizontal well | | 395 | m | | Reservoir temperature | | 85 | °C |
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