Norwegian riser analytics firm 4Subsea has won a contract for monitoring flexible risers for Statoil on the Snorre B facility in the Norwegian North Sea.
The project involves automated integrity monitor systems for six flexible risers the semisubmersible Snorre B platform.
Bergen-based 4Subsea's contracts comes after the firm delivered the fifth system in a row for Statoil’s Snorre A platform.
4Subsea's monitoring solution improves security and reduces risk of production downtime or riser failure. It also reduces operational costs, because it removes the need manual inspection.
Today there are daily inspections of the risers, plus quarterly offshore mobilization of engineering personnel. 4Subsea's solution automates and simplifies these processes.
“We are pleased that Statoil continuously trusts us to play an important role in maintaining secure and cost efficient production at their installations through the integrity management work we perform on flexible risers and flowlines," says Peter Jenkins, CEO of 4Subsea.
The monitoring solution is based on 4Subsea’s AMOS system, which analyses the condition, integrity and expected service life of the flexible risers. AMOS monitors the riser annulus diffusion rate, detecting early signs of riser failure, reducing risk and averting potential costly replacement of risers.
The contract also includes added functionality developed by 4Subsea’s research and development department late 2016 for measuring and trending condensation of liquid in the annulus vent gas.
Statoil will have a system that is fully integrated with their control rooms at Snorre B from day one, providing quicker response time, familiar user interface for the operator, and remote monitoring and trending from onshore.
Siemens is Statoil’s main provider of automation services on Snorre B, and 4Subsea co-operates closely with Siemens on integrating the monitoring system to existing infrastructure and to fit the totality of solutions deployed for the operator.
The data collected with 4Subsea’s monitoring solution provide the foundation for future service life extension and will reduce the need for costly production downtime or riser replacements.