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


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1. Definition & Purpose

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.


2. Key Specifications

ParameterStandard RangeSpecial Options
Base Material304/316L stainless steelCarbon steel, titanium
Hole Diameter0.5mm - 25mm (0.02"-1")Laser-cut micro holes (0.1mm)
Open Area5-40%Optimized flow designs
OD Size2" - 24" (50-600mm)Rectangular/oval profiles
Length1m - 6m (3.3'-20')Continuous coil options

3. Perforation Patterns

PatternAdvantagesApplications
Straight StaggeredHigh strength retentionHigh-pressure wells
Slotted LinearMaximum open areaWater intake screens
HexagonalOptimal flow distributionFilter vessels
Step DrilledGraded filtrationMulti-zone completions

4. Manufacturing Processes

MethodToleranceBest For
Laser Cutting±0.05mmComplex shapes/thin materials
Punch Press±0.1mmHigh-volume production
EDM Drilling±0.01mmMicro-hole arrays
Water Jet±0.2mmNo heat-affected zone

5. Performance Metrics

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)


6. Industry Standards

StandardScope
API RP 19BSand control screen testing
ISO 17824Wire-wrapped screen specs
ASTM E2016Metallic perforated plate
NORSOK M-122Offshore filter media

7. Applications by Industry

SectorUse CaseSpecial Features
Oil & GasSand control screensH₂S-resistant alloys
Water WellsAquifer developmentFood-grade 316L SS
MiningTailings dewateringAbrasion-resistant coatings
ChemicalProcess filtrationPTFE-lined surfaces