High Thermal Efficiency Tubing and Casing
Exceed (Canada)’s High Thermal Efficiency Tubing (HTET) features innovated nanomaterial for insulation to reduce steam heat loss, maintain steam quality, decrease casing deformation, and protect cemented casing. HTET is suitable for the lift cycle operation with the heat carrier temperature below 350°C. Examples of operating conditions are:
- SAGD (Steam Assisted Gravity Drainage)
- CSS (Cyclic Steam Stimulation)
- Steam Flooding
- Offshore oil production
- Wells susceptible to paraffin deposits
- Wells in environmentally sensitive areas
Exceed (Canada) provides a variety of HTET tubes with different thermo-insulation performance grades to meet your needs. HTET tubes can substantially save energy consumption, reduce water consumption and shorten the steaming cycle with successful field applications.
For details on all of Exceed’s HTET, please contact your local Exceed representative. Contact us now to talk to a representative.
Exceed HTET Features
- An enclosed-welded double-wall structure
- A pre-stressed inner tube fitted into an outer tube
- A nanomaterial insulation liner reduces heat transfer and energy loss by convection and radiation
- Only soft vacuuming is required to achieve high insulating grade
- Getter is not required so there is no degradation of the insulation during full well life
- An external insulating sleeve (inside connection), and an internal insulating donut (outer connection), reduces heat loss at the connection.
| Exceed HTET Insulation Grade | |||||
| Rate | A | B | C | D | E |
| Thermal Conductivity Coefficient λ | 0.06 - 0.08 | 0.04 - 0.06 | 0.02 - 0.04 | 0.006 -0.02 | 0.002 - 0.006 |
| K Value BTU/h . Ft . F° | 0.0346758 ~ 0.0462344 | 0.0231172 ~ 0.0346758 | 0.0115586 ~ 0.0231172 | 0.00346758 ~ 0.0115586 | 0.00115586 ~ 0.00346758 |
| Sizes | Grade | Connection Type | Insulators | Thermal Conductivity | Max. Operating Temperature |
| 3 ½" x 2 ⅜" | J55, L80, N80Q | Integral connection with flush OD or external coupled connection | Internal or External | D & E | 350° C |
| 4 ½" x 2 ⅜" | J55, L80, N80Q | Integral connection with flush OD or external coupled connection | Internal or External | D & E | 350° C |
| 4 ½" x 2 ⅞" | J55, L80, N80Q | Integral connection with flush OD or external coupled connection | Internal or External | D & E | 350° C |
| 4 ½" x 3 ½" | J55, L80, N80Q | Integral connection with flush OD or external coupled connection | Internal or External | D & E | 350° C |
| 5" x 3 ½" | J55, L80, N80Q | Integral connection with flush OD or external coupled connection | Internal or External | D & E | 350° C |
Note: Custom design combinations of grades and sizes are available. We are also able to provide buttress or semi premium and premium connections. Range 3 joints also available.