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.
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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