Programme details

By the summer of 2010, Statoil will have installed and commissioned a 2 x 2.5 MW electrical subsea pump system for injection of seawater on the Tyrihans field. Powered from the Kristin platform, the system will pump untreated water directly from the sea into one well at a rate of 14000 m3/day to achieve an Increased Oil Recovery of 10%. The pump system was designed and delivered by Aker Solutions and interfaces the Tyrihans subsea production system delivered by FMC, a power umbilical from Nexans as well as the Kristin topside facilities. In addition to qualification testing, the SRSWI system underwent extensive system testing, including performance- and long term testing, and function testing of the control system from FMC and Kongsberg Maritime.
The subsea modules of the SRSWI system and the power umbilical were installed by Acergy’s vessel Scandi Acergy, while the topside transformers and variable speed drives were installed on Kristin by Aker Reinertsen, the topside modifications and hook-up contractor. The many interfaces in this project required close and constructive cooperation between the parties in all phases of the development. This paper summarises the experiences from the project.