2507 Johnson type 76mm water well screen

2507 Johnson type 76mm water well screen Introduction:

Many water wells penetrate unconsolidated material and require installation of casing and a well screen to prevent inflow of sediment and possible wellbore collapse.

The space around the casing is usually sealed with grouting material of either neat cement or bentonite clay to prevent contamination by water draining from the surface downward around the outside of the casing.

Well screens (filtering devices) are installed in the water bearing formations, allowing water to move into the well, while keeping out gravel and sand.

The most popular filtering devices for water wells are continuous slot (wire-wrapped) screens and perforated liners.

Continuous slot screens made of V shape wire wrapped around a series of vertical rods. This allows the most inlet area and higher productions rates.

Use:Wedge wire screen pipe for filter can be used as below:

1. Well sand control filter

2. Widely used in vairous kinds of medium filtering
3. As the fitting using in the water-treating equipment ( the environment protection; the sea water transforms into the industrial water and life use water desalination treatment; running water treatment; softening treatment;
4. The petroleum industry: the petroleum product terminal filters and the chemical acid; the alkali liquid filters, the ethyl alcohol;
5. The organic solution recycling filter

Advantages:
1. Screens with high open area are more suitable for the construction of high-quality water wells and gas wells.
2. Low cost operation.
3. Reduce the abrasion of the pump.
4. Extend the life span of wells, low-carbon, Galvanized or stainless steel construction.

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