Factory supply stainless steel Johnson wedge wire screen cage type V-wire wound screens:

which has it's own characters:

Area open to flow=6% to 8% for 12 spf, 0.75" EH (assumes all perfs open),

4% open area in base pipe

Skin--1 to 5

Length: 0.1-6.0 meters

 

Wire Wrapped Water Well Strainer Screens are made by winding cold-rolled wire,approximately triangular in cross section, around a circular array of the longitudinal rods. The wire is attached to rods by welding, producing rigid one-piece units having high strength characteristics at minimum weights.

 

Advantages of the flat welded Johnson type screens/the water well screens/wedge wire screens are as follows:

1. Better filter function. 
2. Prolong life of well.
3. Long service life. 
4. High pressure-resistant.
5. Customized.

 

Low cost than full sand control routine completion.

 

PICUTRES OF WEDGE WIRE SCREEN TUBE:

TP304 316L Stainless steel sand screen water wire wrapped screen filter for deep well:

 

Why to choose the cased and perforated wedge wire screens

 

the special wedge shape wire and rods to make of the well screen as the above drawing.

and the specifications of the wedge wire screens:

 

How to find proper screen dimensions and correct slot sizes of the wedge wire screens

Diameter, Specific capacity and available drawdown indicate the productivity of a well to be expected. 
If the pump is installed above the screen the rising velocity at the screen head should not exceed v = 1.75 meter/sec. 
If the pump is installed below the screen in a pump sump then the screen diameter depends mainly on the pump size and the remaining annulus space between the screen and the riser pipe.

Screen length, once decided on the screen diameter the laminar flow conditions at the entrance of the screen determine the requested length. Screen length in the total height of a water bearing formation is - especially when using the con-slot screen - not necessary. The Kozeny concept of investigation for partial penetrated formation is an excellent practice to determine max. Necessary screen length.

 

Package and Delivery:

 

Each with bubble bags and then in wooden case.

Each case is clearly marked with:

1.Batch number

2.Date of manufacture

3.Safe heating & application temperature

Transported by sea, or according to your requirements.

 

INSPECTION:

 

MORE INFORMATION, PLEASE CONTACT WITH US

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