VacuumInsulated Tubing
Steam injection is the development of heavy oil resource economiceffective method.
In order to reduce heat loss of steam injection process and protectcasing, usually by Vacuum Insulated Tubing(VIT) which generally uses double concentrictube, in the two layers of annulus inside pack insulation materials, and thepipe ends sealed to ensure good insulating properties.
Function of Pre-StressedVacuum Insulated Tubing
1. Reduce the heat loss, certainly the steam quality and the depth ofsteam injection can be increased.
2. Minimizes heat stress on casing and cement mantle, protect the casingfrom damage by high temperature.
3. During oil production it will provide superior insulation and greatlyreduce the loss of heat energy.
Character of Pre-StressedVacuum Insulated Tubing
1. The pre-stress will compensate the tubing expansion caused bytemperature difference between the inner and the outer tubes so as to ensurereliable operation under high temp.
2. Gas absorbing materials are packed inside the annulus to clean upharmful gas and
maintain good insulating property whilst in service.
3. Integrated application of heat insulation technology, contains vacuum,heat reflection, heat convection block, ensure super heat insulationperformance of the insulated tubing.
We havepassed the API Q1 and API 5CT certification.
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