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Specifications
1. 114*76mm Vacuum Insulated casing2. reduces the heat loss
vide superior insulation
4.double concentric tube
114*76 mm Vacuum Insulated casing
Features:
1. VIT generally uses double concentric tube, in the two layers of annulus inside pack insulation materials, and the pipe ends sealed to ensure good insulating properties.
2. It can reduces the heat loss, certainly the steam quality and the depth of steam injection can be increased.
3. It can minimizes heat stress on casing and cement mantle, protect the casing from damage by high temperature.
4. During oil production it will provide superior insulation and greatly reduce the loss of heat energy.
Parameter of Pre-Stressed Vacuum insulated Tubing:
Parameter |
Model |
|||||
139*101 |
139*88 |
114*76 |
114*62 |
88*50 |
73*40 |
|
Grade of insulating |
DE |
CDE |
BCDE |
|||
Length (m) |
9.0-10.0 |
|||||
Unit Weight (kg/m) |
42.04 |
40.7 |
32 |
28 |
21 |
15 |
Connecting Thread |
5 1/2 BCSG |
5 1/2 BCSG |
4 1/2 BCSG 4 1/2 EUE |
3 1/2 USS 3 1/2 EUE |
2 7/8 EUE 2 7/8NUE |
|
Outer Tube OD (mm) |
139.7 |
139.7 |
114.3 |
88.9 |
73.0 |
|
Inner Tube ID (mm) |
101.6 |
88 |
76.0 |
62.0 |
50.6 |
40.9 |
Coupling OD (mm) |
154 |
154 |
132 |
108 |
88.9 |
|
Running Depth (m) |
MAX. 1600-4600 |
|||||
Insulating grade of VIT:
Insulting grade |
B |
C |
D |
E |
Apparent k-factor(λ)(w/m.°C) |
0.06>C≥0.04 |
0.04>λ≥0.02 |
0.02>λ≥0.006 |
0.006>λ≥0.002 |
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