Continuous slot screen is manufactured by wrapping a shaped wire around an internal array of longitudinal rods. The wire and rod, generally made from carbon or stainless steel are joined by resistance welding. Screen sections are usually twenty feet long.

Commonly referred to as continuous slot or wire wrap screen, this product was originally developed to overcome problems associated with cable tool wells drilled in fine grained,uniform sands in the North Central United States. These wells were typically completed in relatively shallow, thin aquifers that were very prolific in terms of water production.

Continuous slot screens are very effective in wells of this type since they are able to be manufactured with very small slot size and yet still maintain the necessary open area to minimize frictional head loss. Most continuous wire wrap screen used for these wells are manufactured from stainless steel screens in order to avoid problems associated with sand pumping that may result from accelerated corrosion of carbon steel screens.

Disadvantages of continuous slot screen are associated with its relatively low strength which necessitates special handling during installation and development and also restricts the extent of future well maintenance and repair efforts. Since the interior is obstructed by rods, the use of highly effective well development techniques such as swabbing is precluded. Should the screen be damaged, repair by swedging is impractical.

Users of continuous slot screen are cautioned against using this product for purposes other than which it was originally designed.

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