Characteristics:
~ They consist of two screens or multilayer screen
~ Perforated pipe inside, with perforations wrapped by the outside Johnson type screen
~ The screen jacket and base pipe are welded together with a length of coupling.
~ The base pipe can be made of seamless pipe or welded pipe, and more often, casing pipes.
~ ID of Johnson type screen equals OD of the perforated pipe.
~ Unit length is R1(4.88-7.62m)/R2(7.62-10.36m)/R3(10.36-14.63m),cheaper than fixed length.
Base- pip screen
The screen mainly consists of base pipe and the jacket with punched slot, it has many advantages as follows:
The material of the filter is stainless steel, it has strong anti-corrosion ability
We have advanced manufacture machine, so the slot is with precise control. the width of slot is 0.3mm-1.0mm,with the tolerance is ±0.05mm,we will manufacture them according to your requirement completely.
Perfect integral strength and strong anti-deformation ability,
The internal part of filtration jacket is supported by base pipe and the outer protective shroud can be fixed outside the filtration jacket if necessary
The special design can efficiently control the sand and gravel, and the two slot screen can improve the effect,so the screen can allow water and oil to enter the well freely and at the same time, it keeps the majority of the sand and gravel out of the well.
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