Sign up for email updates

To ensure you're always up to date on the latest news and guidance in the Offshore Energies industry sign up.

Email updates
OEUK Case Studies05th Jun 2017

Nexen – Driving greater efficiency of platform supply vessel fleet through controlling offshore non-productive time

Problem statement

Nexen sought to reduce offshore non-productive time (NPT) to drive greater efficiency of the platform supply vessel (PSV) fleet.


  • To reduce logistics NPT to below 30 per cent in 2015.
  • To manage logistic costs more effectively.


  • Offshore teams were challenged to place greater emphasis on planning and scheduling to ensure the PSVs were working more efficiently.
  • Vessel NPT metrics were also examined which demonstrated that further cost management improvements could be implemented, including vessel sharing and ultimately reducing the PSV fleet.


  • The focus on reducing offshore NPT has enabled Nexen to challenge the manner in which it operates its PSV fleet and change entrenched ways of working.
  • This has resulted in the reduction of the PSV fleet by one term vessel and a reduction in dependency on
    ad hoc spot-hires.
  • It has resulted in annualised savings of £3.5-£4 million.
  • Further improvements to vessel sailing schedules have the potential to reduce the PSV fleet further, saving an additional £1.25-£1.5 million per annum.
  • Vessel savings were a major contributor in improving Nexen’s lifting costs in 2016.

Reduced NFT: 30%

Annualised savings: £3.5-4 million