Case Study 2001-2004. Composite Riser Pipe Monitoring

Client

Deepwater Composites (an Aker Kvaerner and ConocoPhillips Company). Oslo, Norway

Challenge

The instrumentation and testing of CompRiser, a new design of composite riser for deepwater applications

Resolution

Smart Fibres were commissioned to provide optical fibre sensors to several design iterations of CompRiser for design validation and in-service monitoring.

During load tests at Det-Norke Veritas on a composite riser specimen, strains were measured at many locations using both conventional strain gauges and Smart Fibres optical fibre strain sensors. Not only were the optical fibre sensors more reliable than the strain gauges but they also enabled the strain at different depths in the composite to be monitored. The Smart Fibres sensors were still operating correctly even after the riser pipe had been tested to failure.

Further Smart Fibres sensors were embedded in later iterations of the product which were subjected to pressure testing to failure at ConocoPhillips' Houston laboratories.

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