Oil and gas-Decommissioning


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When offshore oil and gas fields reach the end of their operational life, they must be safely decommissioned in line with local legislation. After the plugging and abandonment of wells, decommissioning activities frequently involve the removal of the facilities’ physical infrastructure to an onshore location, where dismantling, recycling and disposal take place. The costs and risks of these obligatory undertakings are significant, and are shared between all those with an operating stake in the asset.

Support to the decommissioning industry

Drawing on our oil and gas domain experience, Frazer-Nash is well-placed to support our global clients across the complete life cycle of offshore decommissioning programmes, from strategic planning to execution. Our experts employ systems engineering principles, advanced analytical skills and unique modelling techniques to help our clients de-risk their complex multidisciplinary activities.

We provide cost estimating in support of:

  • Acquisitions and divestments
  • Asset partner engagements
  • Concept selection for final investment decision (FID)
  • Liability reporting (regulatory bodies)
  • Techno-economic analysis/optioneering.

Our environmental services assist in the delivery of:

  • Disposal optioneering
  • Environmental impact assessment (EIA)
  • Permitting
  • Regulatory engagement
  • Stakeholder consultation
  • Waste management.

We also offer wider skills and services to help companies to achieve their decommissioning goals, including: