Thermal Production Pipe 

1) Grade: H40/J55/K55/N80-Q/L80/P110
2) OD: 1.05"~4 1/2"
3) WT: 2.87~16.00mm
4) length: R1/R2/R3

Vacuum insulated tubing iscomposed of host string, thermo case, coupling, sealing ring and liner pipe.

The insulated tubing adoptsdouble-walled enclosed welded structure; the inner tube is treated withprestressing during welding. There are multi-layer insulation structure in theannulus space and getter in the thermo case that can reduce heat transfer,energy loss by convection and radiation, and avert hydrogen explosion andradiation, and prolong the service life with special handicraft treatment.
The vacuum insulated tubing applies to such operating condition as thetemperature of heat carrier is not over 350 °C.

The insulated tubing mainlyapplies to steam thermal recovery well with "huff and puff" and "steam drive"as well as heavy oil well with "integration of production and injection". Usingvacuum insulated tubing correctly can not only reduce the heat loss of steaminjection and guarantee steam quality but also decrease casing deformation andprotect cementing casing.