Vacuum Insulation Tubing/Casing Specification
The Pre-stressed Vacuum Insulated Tubing/Casing (VIT or VIC) is innovative Tubing/Casing for thermal recovery of heavy oil or bitumen. It is used in Steam Assisted Gravity Drainage (SAGD) and In Cyclic Steam Stimulation (CSS). It reduces the heat loss of the high temperature steam during injection phase. And keep oil hot during production phase. The build-in pre-stress feature can compensate the thermal stress on tubing/casing induced from hot steam, prevent the casing and cement mantle damage from high temperature, and increase tubing/casing service life.
VIT is recommended for SAGD and CSS to improve the overall process and “gain four primary benefits:
All the above can have a large impact on payout and return-on-investment. And in both conventional steam injection and SAGD processes Insulated Tubing (VIT) can benefits the overall process by:
*reference: SPE Paper 153837
Vacuum Insulation Tubing (VIT)
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Vacuum Insulation Tubing/Casing Insulation Grades