Research Article
Sand Blocking Mechanisms and Productivity Analysis of Slant Well in Siltstone Reservoirs
Table 1
Main parameters of multilayer combined production capacity calculation.
| | Geological parameters | Process parameters |
| | Sand body layers | 7 | Very poor permeability throughout the well | 5.5 | | Sand body thickness (m) | 5-15 | Very poor permeability after stratification | 1.5, 3 | | Number of interlayers | 7 | Sand body layers | 7 | | Interlayer properties | Impermeable | Hole drift angle (°) | 30 | | Porosity (%) | 25-35 | Filling particle size (mm) | 0.4-0.8 | | Permeability (10-3 μm2) | 1000-5500 | Shooting layer (m) | 1400-1490 | | Pressure coefficient | 1.01 | General filling radius (m) | 2 | | Rock compressibility (MPa-1) | | Layered filling radius (m) | Mediate- and low-permeability layer 3; high-permeability layer 1 |
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