A perforated screen is a filtration device featuring precisely drilled or punched holes, designed for: Sand control in oil/gas wells Fluid filtration in water wells Debris management in industrial processes
A perforated screen is a filtration device featuring precisely drilled or punched holes, designed for:
Sand control in oil/gas wells
Fluid filtration in water wells
Debris management in industrial processes
Key advantage: Customizable hole patterns for specific particle retention.
| Parameter | Standard Range | Special Options |
|---|---|---|
| Base Material | 304/316L stainless steel | Carbon steel, titanium |
| Hole Diameter | 0.5mm - 25mm (0.02"-1") | Laser-cut micro holes (0.1mm) |
| Open Area | 5-40% | Optimized flow designs |
| OD Size | 2" - 24" (50-600mm) | Rectangular/oval profiles |
| Length | 1m - 6m (3.3'-20') | Continuous coil options |
| Pattern | Advantages | Applications |
|---|---|---|
| Straight Staggered | High strength retention | High-pressure wells |
| Slotted Linear | Maximum open area | Water intake screens |
| Hexagonal | Optimal flow distribution | Filter vessels |
| Step Drilled | Graded filtration | Multi-zone completions |
| Method | Tolerance | Best For |
|---|---|---|
| Laser Cutting | ±0.05mm | Complex shapes/thin materials |
| Punch Press | ±0.1mm | High-volume production |
| EDM Drilling | ±0.01mm | Micro-hole arrays |
| Water Jet | ±0.2mm | No heat-affected zone |
Flow Capacity:
Calculated via: *Q = C × A × √(2gΔP/ρ)*
Where:
C = Discharge coefficient (0.6-0.8)
A = Total open area
Sand Retention Testing:
Conducted per API RP 19B for gravel pack compatibility
Collapse Pressure:
Formula: *P_collapse = 2E/(1-ν²) × (t/D)³*
(E=elastic modulus, ν=Poisson's ratio)
| Standard | Scope |
|---|---|
| API RP 19B | Sand control screen testing |
| ISO 17824 | Wire-wrapped screen specs |
| ASTM E2016 | Metallic perforated plate |
| NORSOK M-122 | Offshore filter media |
| Sector | Use Case | Special Features |
|---|---|---|
| Oil & Gas | Sand control screens | H₂S-resistant alloys |
| Water Wells | Aquifer development | Food-grade 316L SS |
| Mining | Tailings dewatering | Abrasion-resistant coatings |
| Chemical | Process filtration | PTFE-lined surfaces |