High Strength
High temperature derating factors and elevated pressure loads very often lead to heavy and costly well designs. High Strength grades, with enhanced mechanical properties above API, represent a cost-effective alternative to optimize your well design.
Thanks to their tight control of Yield Strength, High Strength grades are able to offer enhanced mechanical resistance while still remaining complaint to API 5CT Q125 grade. Additionally, for the most challenging loads, Vallourec has developed VM 150 CY, offering the highest mechanical performance.
In addition to this, thanks to the controlled yield strength range and specially designed chemistry containing chromium and molybdenum, High Strength grades offer sour service resistance at high temperature levels in severe sour environments.
The main applications for High Strength grades are:
- Large developments with varying mechanical requirements, where it is wished to simplify and standardize the well design.
- Casing and tubing strings exposed to high external, internal or combined pressure coming from formation, drilling operations or well service.
- Casing strings exposed to high temperature levels, degrading the mechanical resistance of the string.
- Strings exposed to mechanical loads in sour environments at high temperature.
- Slim wells, with tight tolerances, where it is not possible to increase the string weight to increase its mechanical performance.
- Deep wells or deviated wells sensitive to casing wear.
| High Strength | High Strength & High Collapse | |
| Application | Critical services | Ultra-critical services |
| 125ksi | VM 125 CY | VM 125 CYHC |
| 130ksi | VM 130 CY | VM 130 CYHC VM 130 CYXC |
| 140ksi | VM 140 CY | VM 140 CYHC VM 140 CYXC |
| 150ksi | VM 150 CY | VM 150 CYHC VM 150 CYXC |
Golf of Mexico offshore wells are a challenge for pipes: high internal and external pressure levels, combined with high temperature exposure and sour environments. CY and CYHC products have raised to the challenge
