1. Characteristics
It’s a type of well screen with vertical slots that are formed by protruding "bridges” that are pushed outward from the well casing.
The sand and gravel cannot easily block the slot because of the special bridge design. It has great mechanical strength and water entering capacity. Meanwhile, it use steel punching technology and rolled in many ways, so it is light, cheap and easily operating. We use CNC to punch, so the slot can change as your requirements. In order to give customers more convenience, we can offer any diameter screens ,we also offer galvanized ones to prolong the operational life.
2. Specifications
|
Nominal Dia.(mm)
|
146
|
159
|
219
|
273
|
325
|
377
|
426
|
529
|
|
||||||||||||
|
I.D.
|
130
|
140
|
138
|
200
|
198
|
254
|
250
|
246
|
305
|
300
|
297
|
357
|
350
|
346
|
406
|
400
|
398
|
502
|
500
|
498
|
|
|
W.T.
|
5
|
5
|
6
|
5
|
6
|
5
|
6
|
8
|
5
|
6
|
8
|
5
|
6
|
8
|
5
|
6
|
8
|
6
|
7
|
8
|
|
|
Coupling O.D.
|
146
|
160
|
162
|
220
|
226
|
274
|
278
|
278
|
325
|
328
|
329
|
377
|
378
|
379
|
426
|
428
|
432
|
529
|
530
|
531
|
|
3. Installation
- Adopt the suspensory screen-laying method,
- Carefully check whether screens become deformed before laying them down, and adjust them when necessary.
- Dilute slurry before laying down screens with the proportion of less than 1.2T/M3, otherwise, the blocking of slots will produce great pressure difference inside and outside the screens, leading to the possibility of deformation. Similarly, the use of palmae barkornylon net will cause the deformation, therefore great pressure difference should be avoided.
- Lay down screens steadily. If not smoothly, adjust the angle of screens and check whether they are deformed as a result of blocking before trying again. If screens cannot be laid down on account of blocking, forcibly trying should be forbidden.
- Generally, compressors are used to flush wells. When pistons are necessary, operating pistons should be careful in case of the deformation of screens as a result of great pressure difference caused by the violent operation of pistons.
If you are interested in our product, please contact us for more information