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Perforated Liners

Perforated Liners
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FOB Price: Negotiable 
Minimum Order Quantity:  
Supply Ability:
Place Of Origin:
Delivery Time: 3 days
Expiry Date: long-term effectiveness
Last Update: 2021-12-17
Views: 71
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Product Details
 
 Perforated liner is a sand control screen widely used in the horizontal completion wells of SAGD and other thermal heavy oil recovery. It is made of stainless steel or galvanized steel pipes slotted with single, double line or staggered patterns. This metal tubing has excellent properties in withstanding installation loads and operation loads make it the premier choice for SAGD.

The perforating of liners are done with laser cutting process without contact operation. This process can effectively avoid undesirable factors which will cause the deformation of the base pipe. Laser cutting process uses windows interface for easy operation and accurate calculation.

Perforated liner geometry consists of stamped length, stamped width, line density and perforating distribution. All these parameters can be bespoken to achieve the required open area. For example, multiple staggered pattern or gang pattern significantly increases the open area compared with single cut pattern.

Perforated Liners
Staggered perforated liner, single line patterns

Three stamped liner patterns -straight, staggered and gang - are supplied. Each has its own characteristics.

Straight line pattern Staggered pattern Gang pattern
Straight line pattern Staggered pattern Gang pattern

Perforated Liner Geometry
Stamped line shapes are classified into two types: straight cut slot and keystone slot. Compared with straight slot, keystone slot has higher resistance against plugging for its inter size is larger than the surface size. Once the sand entering the keystone slot, the possibility of clogging will dro sharply.

Keystone slot
Straight cut line Keystone slot

Features:
Moderate cost
Ease of installation
Sufficient operation load
Non-plugging
Laser cutting process

Product specification

Required slot per ft. for 3% open area

Slot Width (mm)

Slot Width (inch)

3.5" Liner

4.5" Liner

5.5" Liner

7" Liner

0.38

0.015

176

228

276

352

0.45

0.018

148

188

232

296

0.5

0.020

132

172

208

264

0.63

0.025

108

136

168

212

0.7

0.028

96

124

148

188

1

0.038

52

68

84

104

1.5

0.058

36

44

56

68

3

0.125

16

24

28

32

6

0.250

8

12

16

16

Stainless Steel Perforated Liners for Sand Control

 
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