Gravel pre-packed wedge wire screens consists of two screens or multilayer screens and the stuffing between the screens. Perforated pipe inside and Johnson type screens/wedge wire screens outside.The base pipe can be made of casing pipes, seamless pipe or welded pipe.ID of Johnson type screen equals OD of the perforated pipe.
Characteristics of gravel pack screen
1. Gravel pre-packed wedge wire screens consist of two screens or multilayer screen;
2. Perforated pipe inside ,with perforations wrapped by the outside Johnson type screen;
3. The screen jacket and base pipe are welded together with a length of coupling;
4.The base pipe can be made of seamless pipe or welded pipe, and more often, casing pipes;
5. ID of Johnson type screen equals OD of the perforated pipe.
|
Wedge Wire Screen |
Base Pipe |
|||
|
ID(mm) |
OD(mm) |
Slot(mm) |
Normal Size(inch) |
OD(mm) |
|
63 |
73 |
0.10-3 |
2-3/8” |
60.3 |
|
74 |
85 |
0.10-3 |
2-7/8” |
73 |
|
92 |
102 |
0.10-3 |
3-1/2” |
88.9 |
|
103 |
127 |
0.10-3 |
4” |
101.6 |
|
116 |
130 |
0.10-3 |
4-1/2” |
114.3 |
|
129 |
142 |
0.10-3 |
5” |
127 |
|
142 |
154 |
0.10-3 |
5-1/2” |
139.7 |
|
172 |
184 |
0.15-3 |
6-5/8” |
168.3 |
|
183 |
195 |
0.15-3 |
7” |
177.8 |
|
220 |
232 |
0.15-3 |
8-5/8” |
219.1 |
|
246 |
260 |
0.25-3 |
9-5/8” |
244.48 |
|
276 |
290 |
0.25-3 |
10-3/4” |
273.05 |
|
342 |
355 |
0.25-3 |
13-3/8” |
339.70 |
|
Screen Pipe Length 5m*1 |
Screen Pipe Length( m) |
5.8 |
||
|
Screen Pipe Length 4.5 m * 2 |
9.3~9.6 |
|||
|
Screen Pipe Length 5 m * 2 |
11~12 |
|||
1.Material: 201 304 304L 316 316L Q235
2.Another name: Pipe base screen
3.Screen jacket: Johnson type screen
4.Base pipe: Perforated pipe
5.Connection type: STC, LTC,BTC threaded
6.Bubble bag, wooden pieces wrapped the Johnson screens
The above data is for reference only, actual information is subject to the drawings
