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Unlike galvanized steel screens that rust in 2-3 years, it resists underground corrosion and sediment abrasion, with service life up to 15-20 years. It offers filter precision from 0.05mm to 2mm and water yield up to 800m³/h, complying with API RP 13B-2 standards for oil and water wells.
Efficient Sand Control: Filter precision customizable from 0.05mm to 2mm, capturing 99% of sand particles (≥filter precision). A 0.5mm screen reduced well sand content from 15g/L to 0.1g/L, protecting submersible pumps.
High Water Yield: Open area up to 60% (wedge-wire type) vs. 15-20% for punched screens, increasing water yield by 30-50%. A 300mm diameter screen achieved 500m³/h yield in a municipal water well.
Underground Durability: 316L stainless steel resists saltwater and acidic groundwater (pH 3-13) with corrosion rate < 0.01mm/year; 304 for fresh water (pH 6-8). Passes 1000-hour salt spray test (ASTM B117) with no red rust.
Sediment-Resistant Design: Tapered wedge wires (wedge-wire type) or self-cleaning mesh (woven type) reduce sediment accumulation by 70%. The smooth surface prevents biofouling, lowering well cleaning frequency by 60%.
Drinking Water Wells: A Scandinavian municipal water project used 316L wedge-wire screens (0.1mm precision), producing water with turbidity <0.5 NTU (meets WHO standards) and reducing pump maintenance by 80%.
Oilfield Water Injection Wells: A Middle Eastern oilfield adopted 1mm precision screens, filtering injection water to remove 99% of particles (≥1.2mm) and preventing reservoir plugging—oil production increased by 5%.
Geothermal Well Systems: A New Zealand geothermal plant used high-temperature 316L screens, withstanding 180°C geothermal water and resisting mineral scaling. The screens maintained 400m³/h yield for 15 years.
Q: Which screen type is better for sandy aquifers?
A: Wedge-wire screens are optimal for sandy aquifers, as their continuous slots avoid sand bridging and offer higher open area. Woven mesh screens are suitable for fine silt (≤0.1mm) but clog faster in sand.
Q: How to determine filter precision for a water well?
A: Test aquifer sand particle size—choose precision equal to d10 (10% of particles smaller than this size). For example, if d10=0.3mm, use 0.3mm precision to retain 90% of sand.
Q: Can it be installed in deep wells (>500m)?
A: Yes, choose thick-walled screens (wall thickness ≥3.0mm) with centralizers (every 2m) to withstand downhole pressure (up to 10MPa). 316L screens are recommended for deep wells to resist corrosion.
Q: How to clean a clogged well screen?
A: Use air-lift pumping (air pressure 0.5-1.0MPa) or chemical cleaning (hydrochloric acid solution 5-10% for scaling). Avoid mechanical brushing—may damage the filter surface.
Unlike galvanized steel screens that rust in 2-3 years, it resists underground corrosion and sediment abrasion, with service life up to 15-20 years. It offers filter precision from 0.05mm to 2mm and water yield up to 800m³/h, complying with API RP 13B-2 standards for oil and water wells.
Efficient Sand Control: Filter precision customizable from 0.05mm to 2mm, capturing 99% of sand particles (≥filter precision). A 0.5mm screen reduced well sand content from 15g/L to 0.1g/L, protecting submersible pumps.
High Water Yield: Open area up to 60% (wedge-wire type) vs. 15-20% for punched screens, increasing water yield by 30-50%. A 300mm diameter screen achieved 500m³/h yield in a municipal water well.
Underground Durability: 316L stainless steel resists saltwater and acidic groundwater (pH 3-13) with corrosion rate < 0.01mm/year; 304 for fresh water (pH 6-8). Passes 1000-hour salt spray test (ASTM B117) with no red rust.
Sediment-Resistant Design: Tapered wedge wires (wedge-wire type) or self-cleaning mesh (woven type) reduce sediment accumulation by 70%. The smooth surface prevents biofouling, lowering well cleaning frequency by 60%.
Drinking Water Wells: A Scandinavian municipal water project used 316L wedge-wire screens (0.1mm precision), producing water with turbidity <0.5 NTU (meets WHO standards) and reducing pump maintenance by 80%.
Oilfield Water Injection Wells: A Middle Eastern oilfield adopted 1mm precision screens, filtering injection water to remove 99% of particles (≥1.2mm) and preventing reservoir plugging—oil production increased by 5%.
Geothermal Well Systems: A New Zealand geothermal plant used high-temperature 316L screens, withstanding 180°C geothermal water and resisting mineral scaling. The screens maintained 400m³/h yield for 15 years.
Q: Which screen type is better for sandy aquifers?
A: Wedge-wire screens are optimal for sandy aquifers, as their continuous slots avoid sand bridging and offer higher open area. Woven mesh screens are suitable for fine silt (≤0.1mm) but clog faster in sand.
Q: How to determine filter precision for a water well?
A: Test aquifer sand particle size—choose precision equal to d10 (10% of particles smaller than this size). For example, if d10=0.3mm, use 0.3mm precision to retain 90% of sand.
Q: Can it be installed in deep wells (>500m)?
A: Yes, choose thick-walled screens (wall thickness ≥3.0mm) with centralizers (every 2m) to withstand downhole pressure (up to 10MPa). 316L screens are recommended for deep wells to resist corrosion.
Q: How to clean a clogged well screen?
A: Use air-lift pumping (air pressure 0.5-1.0MPa) or chemical cleaning (hydrochloric acid solution 5-10% for scaling). Avoid mechanical brushing—may damage the filter surface.
