The Bridge Slotted Screen is an advanced filtration solution featuring bridge-shaped slots, engineered for water wells, oil wells, dewatering projects, and geothermal development. Its unique design prevents sand clogging while delivering superior mechanical strength and permeability, recognized as the "Ideal Well Filter" Application Scenarios •Water Wells: Agricultural irrigation & drinking water sources, 40% higher permeability. •Dewatering: Subway foundations & construction pits, 95% sand retention. •Geothermal: Geothermal wells & hot springs, ideal for sandy formations. •Well Rehabilitation: Restores output efficiency in aging wells.
Slot Design:
Bridge-type: Interlocking slots prevent straight-through sand passage
Slot Width: 0.1mm~3mm (customizable), tolerance ±0.02mm
Slot Length: 20~50mm (optimized for flow/strength balance)
Material & Process:
Base Pipe: SS304/316, carbon steel (Ni-P coated)
Laser Cutting: Burr-free edges, high precision
Surface Finish: Electropolishing (EP) or sandblasting
Advantages:
Sand Retention: Blocks particles ≥0.1mm (matched to slot width)
Flow Area: 15%~30% (higher than wire-wrap screens)
Strength: Axial crush ≥50MPa, collapse ≥20MPa
✔ Unconsolidated sand reservoirs
✔ Horizontal well multi-stage completion (with packers)
✔ Water injection/geothermal well filtration
| Feature | Bridge Slotted Screen | Wire-Wrap Screen |
|---|---|---|
| Slot Precision | ±0.02mm (laser-cut) | ±0.1mm (wrapped) |
| Flow Area | 15%~30% | 5%~15% |
| Anti-Clogging | Excellent (bridge effect) | Moderate |
| Well Type | Ideal for horizontals | Vertical/low-angle |