Customization: | Available |
---|---|
After-sales Service: | 1 Year |
Warranty: | 1 Year |
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Vacuum Insulated Tubing (VIT) is designed to develop oil and gas fields located in the most challenging oil and gas production conditions.
For example, Pre-stressed Vacuum Insulated Tubing (VIT) replaces oil tubing for heavy oil recovery by steam injection to improve project economics.
Vacuum insulated tubing & casing uses water-based fiber cloth material with a three grade vacuum pump equipment, automatic welding machine and MT. These guarantees a high degree of vacuum level that meets the insulation grades D and E.
These vacuum insulated tubing & casing use an effective getter to ensure the tubing insulation grade do not decrease after a long time of outdoor storage.
Grades: J55, K55, L80, N80, 80SS, P110
Length Range: R2 or R3
Threading: Inner tube and outer tube threading
Connections: Semi-premium and premium available
Normal operating temperature: 350 Celsius
Conductivity (k) of inner pipe: 0.002 ~ 0.08 W/m·ºC
API 5CT Vacuum Insulated Tubing (VIT) | |||||
Model
Outer tube OD x Inner Tube OD (in x in) |
Outer Pipe
ODxWT (mm) |
Inner Pipe
ODxWT (mm) |
Coupling OD
(mm) |
Cementing Center
(in) |
Thread |
3 1/2 x 2 3/8 | 88.9 x 6.45 | 60.3 x 4.83 | 108 | 5 | 3 1/2 USS |
4 1/2 x 2 7/8 | 114.3 x 6.88 | 73.02 x 5.51 | 132 | 7 | 4 1/2 BC |
4 1/2 x 3 1/2 | 114.3 x 6.88 | 88.9 x 6.45 | 132 | 7 | 4 1/2 BC |
5 x 3 1/2 | 127.0 x 9.19 | 88.9 x 6.45 | 141.3 | 9 5/8 | 5BC |
5 1/2 x 4 1/2 | 139.7 x 7.72 | 114.3 x 6.35 | 154 | 5 1/2 BC | |
7 x 5 1/2 | 177.8 x 9.19 | 139.7 x 7.72 | 154 | 7 BC |
Insulation Grades Available | |||||
Grade/Conductivity | A | B | C | D | E |
Heat conductivity coefficient
K=Watt/Meter x Celsius |
0.06 ~ 0.08 | 0.04 ~ 0.06 | 0.02 ~ 0.04 | 0.006 ~ 0.02 | 0.002 ~ 0.006 |