unction and Characteristics:

1. The sand filter tubes have the efficient sand prevention performance can preferably forbid the formation particle and fulfill the need of sand control.

2. Even filter pores, high permeability and anti-blocking.

3. Large filtering area, small flow resistance and high oil extraction rate

4. Stainless material has the corrosion resistant ability of antacid, alkali and salt, can easily suit the special requirement of the petroleum well. And the slot wont be enlarged because of the corrosion.

5. Multiple structure was welded together with stable filtering pore which made the strong non-deformability. 

Material of johnson screen:

stainless steel 302, 304, 316, 304L, 316L  or  low carbon galvanized wires

Out diameter of johnson screen:

29mm,50mm,68mm,100mm,117mm,168mm,219mm,251mm,278mm

Max diameter :1000mm.

Slot of johnson screen:

0.05mm,0.08mm,0.1mm,0.5mm,1.0mm,1.25mm,2.0mm,2.2mm,3.0mm,3.5mm,5.0mm,6.0mm and so on.

The slot can be made according to the request

Length:

3M & 6M

10MM~5850MM

End connection:

With welded ring  &  with tread male/female coupling

Specification of the wire and rod

Profile wire:

Width(mm): 1.5,1.8,2.3,3.0,3.3,3.7,4.0,4.5

Height(mm): 1.5,2.2,2.5,2.7,3.0,3.6,4.0,4.3,4.5,4.70,5.

support rods:

Width(mm): 1.5,2.0,2.3,2.5,3.0,3.3,3.7,4.0,4.5

Height(mm): 1.5,2.2,2.5,2.7,3.0,3.6,4.0,4.5,4.7,5.5

Round rods : diameter from 2.50mm to 6.0mm