The Snøhvit project in the Barents Sea is a milestone in subsea oil and gas development, with a record breaking offset and all subsea facilities tied-back to shore.
The key elements of technology required to implement such a new development with a subsea Production Controls System qualified to operate over a distance of 220km are:
Long-range communications with no repeaters
Long-range supply of power at 3 kV
High data rate requirements
HV electrical and fibre-optic wet-mating connectors
A cost effective main umbilical
Diverse backup strategies
This paper will focus on the technical achievements in executing this ultra-long offset subsea-to-beach project which is now nearing completion.
The implementation of fibre-optic communications, subsea data routing, high voltage and power distribution technologies.
Back-up communications on Power "COPS" system
The Backup Intervention Control System (BUICS) designed for use in the event of main umbilical non-availability.