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Into The Deep

Siemens to deliver power supply solution for drilling rigs

Posted on September 3, 2013

Siemens Energy said it has received an order for two complete electrical power generating stations – including the company’s ‘closed ring solution’ – for supplying offshore drilling rigs with electricity.

Siemens’ scope of supply includes the entire power supply systems, each consisting of medium-voltage switchgear, transformers, drilling-drives, low voltage switchgear, variable frequency drives (VFD) and a power supply system for dynamic positioning (closed ring DP3), which enhances flexibility and streamlines the power management system of the rig, the company said.

The Siemens systems will be used onboard the 7th generation, semi-submersible Frigstad D90 drilling rigs, which are under construction at the Chinese shipyard Yantai CIMC Raffles Offshore Ltd. in Yantai, China. Delivery of the first drilling rig to Frigstad Deepwater Ltd. is scheduled for December 2015; the second unit will be delivered six months later.

The order also includes an option for equipping a further four drilling rigs with power supply systems over the next four years. The rigs will be capable of operating in water depths up to 3657 m and drilling to a total depth of 15 240 m.