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Woodside Subsea Pipeline Repair Plans

Woodside Subsea Pipeline Repair Plans

Benefits
Woodside’s suite of asset specific subsea pipeline repair plans and associated documentation now reflected current market capability from vendors, contractors and available repair methodologies. In addition, each repair plan was revised to consider each pipeline’s business criticality which was used to inform decisions on pre-investment and repair methodology. The updated plans will now, in the event of pipeline damage which leads to emergency repair, enable a quicker repair with less impact to production and further reduce the risk of long-term pipeline damage due to prolonged exposure to raw seawater.
Background
In December 2014 Woodside Energy Ltd revised its over-arching Subsea Pipeline Repair Strategy document. Woodside requested Atteris to revise five subsea pipeline repair plans as well as associated documentation and make recommendations for subsea pipeline repair acceleration opportunities which would reduce business risk.
Work Performed by Atteris

Atteris’ engineering team:

  • Revised the Subsea Pipeline Repair System Reference Information document and five subsea pipeline repair plan documents to reflect the capability of current vendors, contractors and repair methodologies
  • Performed a business risk criticality assessment for the evaluation and update of emergency repair and methods
  • Identified a number of repair schedule acceleration opportunities, specified the technical definition, estimated costs, and identified benefits for pre-investment in relation to minimising business risk

Several of Atteris’ identified acceleration opportunities which did not require further investment were incorporated into the repair plans and other documentation. Several business-critical opportunities requiring pre-investment were reviewed and budgeted separately.

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