Project Scope

To improve and deepen the knowledge of the mechanical properties of sour service Q&T HPLP (high performance line pipe) under specific laboratory testing methods, which are becoming more common in offshore and deeptwater applications such as strain based design, reeled lines, DNV-type specs etc.

All tests are being carried out on the latest generation of Tenaris LP (low Carbon), manufactured for recent important projects. Full scale reeling tests (including with girth welds) are included in the program.

The project is the second phase of an integral characterization research program on Tenaris line pipe which started back in 1999. The results will be added to the Tenaris special testing database.

Participants

CSM / E. Anelli
Herriot Watt University, Edinburgh, Scotland (Reeling Tests)
Coflexip Stena Offshore (CSO) for the girth welds

Expected Outputs

The testing program will generate a significant amount of information which is essential for feasibility studies of future projects. The date will also be available to customers for us during early stages of pipeline design for certain projects. This is expected to be a strong technical tool for both Tenaris and the customer.

Some of the most important tests being performed are

CTOD
DWTT
High temperature mechanical properties
Cyclic load tests
Linear expansion index determination.
Compression tests followed by tension at high temperature
Full scale reeling tests of pipe and welds.