Vacuum Insulated Tubing
- Vacuum insulated tubing & casing are reusable;
- Reduces heat loss ensuring optimal steam quality being injected into the oil formation;
- Minimizes heat stress on well casing and cement mantle, decreases unwanted annulus pressure;
- Improves well life cycle cost and avoids failure due to well integrity issues;
- Optimized cyclic steam stimulation cycles for better overall project economics;
- Important technology for the economic production of deeper heavy oil formations.
- Technical Specification
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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·℃
| 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 |
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.
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Buyer’s Guide
Please send us your inquiry with detail item description or with Model number. If there is no packing demand we take it as our regular exported standard packing. We will offer you an order form for filling. We will recommend you the most suitable model according to information you offered.
We can give you really high quality products with competitive price. We have a better understanding in Chinese market, with us your money will be safe.
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Lake Petro is located in Dongying City, which is famous for Shengli Oilfield and the largest manufacturing hub of petroleum equipment in China. Following the principle of “quality first, science and technology innovated, people oriented”, every Lake Petro person is sparing no effort to provide the customers with best products and services. Our products are based on advanced production line and testing equipment, our products are designed and manufactured according to certification of API, ISO, GOST, etc.