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.

You can access this article if you purchase or spend a download.