North Sea Decommissioning Projects

Ternan Energy routinely provide support for trenching and burial projects including:

  • Pipe-soil analysis
  • Cable burial risk assessment
  • Trencher performance predictions
  • Assessment of rock placement structure stability on the seabed

Ternan recently provided geotechnical and trenching consultancy support for a large-scale North Sea decommissioning project. The aim of this work was to de-risk the potential trenching and burial operations for several subsea pipelines. Having considered geotechnical data, pipeline condition reports, environmental and engineering concerns as well as current trenching tool capabilities, a comprehensive trenching risk assessment was produced. This provided advice on how best to decommission the pipeline including method and tool selection.



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