Johnson pipe screen

Johnson pipe screen 1. A double layer of high standard screen having very accurate "V" shaped wire welded to support rods.2. A perforated pipe which permits the screen to be utilized in very deep wells3. A variable thickness layer of calibrated sand, either with or without epoxy resin, and contained within the annulus of two concentric screens.4.

The permanent (patent pending) control of the annular spacing during sand loading and resin preparation5. A very close control of slot tolerances designed to prevent sand migration.6. A "V" shaped slot which ensures better flow performance.7. Better screen protection due to specially designed rings that protect the filtration zone.8.

A variable annular width, and therefore sand volume, specific to the application and the well environment, such as deviated, horizontal or depleted wells 9. The use of Tianshan deep well screens offers efficiency and reliability