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Wire Wrapped Screen
A new combination offering:
- A double layer of high standard screen having very accurate "V" shaped wire welded to support rods.
- A perforated pipe which permits the screen to be utilised in very deep wells.
- uA variable thickness layer of calibrated sand, either with or without epoxy resin, and contained within the annulus of two concentric screens.
- The permanent (patent pending) control of the annular spacing during sand loading and resin preparation.
- A very close control of slot tolerances designed to prevent sand migration.
- A "V" shaped slot which ensures better flow performance.
- Better screen protection due to specially designed rings that protect the filtration zone.
- A variable annular width, and therefore sand volume, specific to the application and the well environment. For example deviated, horizontal or depleted wells.
The use of HAIXING deep well screens offers efficiency and reliability.
Materials ranging from AISI 304 stainless steel through to exotic alloys such as INCONEL are possible.
PIPE BASE |
SCREEN |
Size
(mm) |
Outside
diameter
(mm) |
Inside
diameter
(mm) |
Weight
lbs/ft |
Number of
holes/m |
Holes
diameter
(mm) |
Outer
screen
O.D
(mm) |
Annulus
(mm) |
Inner
screen
I.D. |
| 2 3/8 |
60 |
50.6 |
4.6 |
314 |
10 |
86 |
6 |
64 |
| 2 7/8 |
73 |
62 |
6.4 |
354 |
10 |
100 |
6 |
77 |
| 3 1/2 |
89 |
76 |
9.2 |
354 |
12 |
106 |
6 |
93 |
| 4 |
102 |
90 |
9.5 |
394 |
12 |
129 |
6 |
106 |
| 4 1/2 |
114 |
102 |
11.5 |
472 |
12 |
140 |
6 |
118 |
| 5 |
127 |
114 |
13 |
512 |
12 |
154 |
6 |
131 |
| 5 1/2 |
140 |
126 |
15.5 |
552 |
12 |
167 |
6 |
144 |
| 6 5/8 |
168 |
150 |
24 |
590 |
12 |
195 |
6 |
172 |
The above tables detail only a few of the standard dimensions and many others are also available.
Standard materials are 304 stainless steel for the jacket and J55 or K55 for the pipe base.
Standard external screen open area is 21 % and internal screen 25%.
Technical details are to be confirmed by formal offer.
Necessary information for product design is as follows :
- The bore hole diameter
- The API size of the pipe based screen.
- The overall length and effective length of screen.
- The material of construction required.
- The slot opening.
- The type of end connection including size and thread form.
- Whether or not a centraliser is required
 
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