Wire Wrap Screen

Wire wrap screen is widely used throughout the world for water, oil & gas wells, and is the dominant screen type used in the water well industry. The welded stainless steel wire wrap screen is made up of rods and profile wire. The rod can be round wire, triangular wire or trapezoid wire. The profile wire is triangular wire (V-shaped wire). This type of wire wrap screen has a structure and high open area, as well as accurate slot dimension. The wire is attached to the rods by welding, producing rigid one-piece units having high strength characteristics at minimum weights. Slot opening for screens are manufactured by spacing successive turns of the outer wire to produce the desired slot size. All slots should be clean and free of burrs and cuttings. Each slot opening between adjacent wires is V-shaped, from the special shape of wire used to form the screen surface. The V-shaped openings designed to be non-clogging, narrowest at the outer face and widen inwardly.
 
Wire Wrap Screen can be used in both Gravel Pack and Stand Alone Screen (direct retention) applications. Screens are available in a range of sizes and specifications, including outside diameter, material type, the geometry and dimension of the screen slots, and so on.  
       

Features & Benefits

1. V-Shaped Slots — Openings shaped like a "v" that open toward the inside of the well tend to allow the particles that are just barely smaller than the width of the slot pass. In other shapes of openings, these particles would get caught in the screen and clog it.
 
2. Very Large Open Area — This design gives continuous slot and hence the open area for water to enter is more than 2 times that of conventional slotted pipes of any size and slot opening. This allows more water to enter at much lesser frictional head loss and the efficiency of tube well is improved appreciably.
 
3. Better Sand Filtration — Due to specialize manufacturing process, wide range of slot opening is available down to 0.15mm to allow proper slot selection depending upon the size of sand in particular area. This gives better sand control and reduced pump maintenance and longer tube well life.
 
4. Low maintenance costs — Separation at the screen surface which can easily cleaned by scraping or back washing.
 
5. Maximum process output — Precise and continuous slot openings resulting in accurate separation without loss off media.
 
6. Energy Saving — Due to reduce frictional head losses and increased discharge, the pump load reduces the power required to pump same quantity of water. Power saving of around 20-25% is observed.
 
7. Chemical and thermal resistant — A variety of corrosion resistant stainless steel materials and many exotic alloys suitable for high temperatures and pressures. Each slot opening between adjacent wires is V-shaped, resulting from the special shape of the wire used to form the screen surface. The V-shaped openings, designed to be non-clogging, are narrowest at the outer face and widen inwardly. Continuous-slot screens provide more intake area per unit area of screen surface than any other type. For any given slot size, this type of screen has maximum open area.


Applications
Vertical oil & gas well and water wells


Technical Data
Screen Size Inside Diameter Outside Diameter  OD of Female Threaded End 
in mm In mm in mm In mm
2 51 2 51 25/8  67 23/4  70
3 76 3 76 35/8  92 33/4  95
4 102 4 102 45/8  117 43/4  121
5 127 5 127 55/8  143 53/4  146
6 152 6 152 65/8  168 7 178
8 203 8 203 85/8  219 91/4  235
10 254 10 254 103/4  273 113/8  289
12 305 12 305 123/4  324 133/8  340
14 356 131/8  333 14 356 —  — 
16 406 15 381 16 406 —  — 
20 508 18 3/4  476 20 508 —  — 
 
PROFILE WIRE 
 WIDTH(mm) 1.50 1.50 2.30 2.30 1.80 3.00 3.70 3.30
 HEIGHT(mm) 2.20 2.50 2.70 3.60 4.30 4.70 5.60 6.30
 
SUPPORT ROD 
 WIDTH(mm) 2.30 2.30 3.00 3.70 3.30 Ø2.5--Ø5mm
 HEIGHT(mm) 2.70 3.60 4.70 5.60 6.30 ----
 
Slot size (mm): 0.10, 0.15, 0.2, 0.25, 0.30-3, also custom sizes to meet specific requirements.
Open area: up to 60%.
Material : Low Carbon, Low Carbon Galvanized steel (LCG), Steel treated with plastic spraying and Stainless Steel Steel( 304, 304L, 316, 316L, etc.).
Length: up to 6 meters.
Diameter: from 25 mm to 1200 mm
End Connection :Plain beveled ends for butt welding or threaded.

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