GE Supplies Subsea Production Systems for Troll

Demonstrating how GE technology helps operators extend the life of aging offshore production equipment, GE Oil & Gas is supplying Statoil Petroleum AS with its fifth generation SemStar5 Subsea Electronics Module to upgrade and extend the life of the subsea production control system for the Troll B field.

GE Oil & Gas designed, built and installed the original Troll B subsea production system in 1995. The new Troll B subsea control system will upgrade all wells on manifolds D, E, F, G and H.

The award-winning SemStar5 will be designed to be backwards compatible with the existing system and will replace the reliable, but now obsolete technology that was provided originally. The SemStar5 offers architectural flexibility for a variety of production control system applications, and has successfully been deployed on several Statoil fields in recent years and has been field proven as a robust and reliable solution for upgrading subsea production control systems.

Featuring a modular design approach, SemStar5 is an example of the Industrial Internet’s role in boosting equipment efficiency and performance by providing the infrastructure that supports the higher bandwidth requirements of modern instrumentation while also offering high reliability. The modular design draws on GE’s nearly 30 years of experience with subsea systems.

The first application of the new technology was for Statoil’s Tordis Vigdis Controls Modification project in the North Sea, west of Norway, in about 656 feet (200 meters) of water.

Troll B was originally installed with a 20-year field life. Two decades later, GE is successfully maintaining the system on behalf of Statoil through its obsolescence management and active brownfield offerings.


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