HomeTechnologyPrecise Punched Slot Screen

Precise Punched Slot Screen

Precise Punched Slot Screen mainly consists of perforated base pipe, stainless steel filtration jacket with punched slot and backup ring. The base pipe is of API casing or API tubing with many drilled holes. The filtration jacket with punched slot is made of high quality stainless steel, and the spatial slot in high dense array over it is achieved by digital control precise punching. In the end, the filtration jacket with punched slot is welded onto the perforated base pipe through backup ring. In application, the formation sand can not easily enter the filtration jacket while the formation fluid can easily flow into screen through space between punched slots. So sand control is achieved. If needed, an extra outer protective shroud can be added outside the filtration jacket so to strengthen protection for the filtration jacket.

Precise Punched Slot Screen


O.D. of base pipe (in) Nominal size (mm) O.D. (mm) Effective slot length (m) Length (m)
2 60.3 72 46 3.2-13
2 73 83 55.8 3.2-13
3½ 89 109 67 3.2-13
4 101.6 110.5 76 3.2-13
4½ 114.3 125 84.5 3.2-13
5 127 137 93.6 3.2-13
5½ 139.7 150 102.7 3.2-13
6 168.3 178 122 3.2-13
7 177.8 188 129 3.2-13

Effective length of slot is 3-5 times as long as the conventional slot, and can be customized.

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