Pipe base screens are used for oil and water exploiting.
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.
Specifications of Huadong Johnson type screens.
OD(outside diameter) | 28-600mm/1-24inch |
Material | 201 304 304L 316 316L Q235 |
Slot size | 0.05---1.5mm |
Connection type | LTC, STC, BTC threaded or welded |
Unit length | 3m&6m |
Features of Perforated Pipe
1) We can drill standard or customized hole size in any number and any pattern.
2) Every joint perforated by us is deburred internal and external.
3) Every hole is visually inspected and cleaned of burr material.
Pipe Size | Holes per feet | Size of hole | Perforated Area per Feet |
3/4" | 78 | 3/16" | 2.15 |
1" | 54 | 5/16” | 4.14 |
1-1/4” | 66 | 5/16” | 5.06 |
1-1/2” | 78 | 5/16” | 5.06 |
2-1/16” | 78 | 5/16” | 5.98 |
2-3/8” | 90 | 3/8” | 9.94 |
2-7/8” | 102 | 3/8” | 11.26 |
3-1/2” | 126 | 3/8” | 13.91 |
4” | 138 | 3/8” | 15.24 |
4-1/2” | 150 | 3/8” | 16.56 |
5” | 162 | 3/8” | 17.88 |
5-1/2” | 174 | 3/8” | 19.21 |
6-5/8” | 186 | 3/8” | 20.53 |
7” | 222 | 3/8” | 24.51 |
9-5/8” | 294 | 3/8” | 32.46 |
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