Case Study

Decommissioning Support

Project description

PDi was engaged for a FEED study investigating decommissioning options for the Leadon field and associated pipeline bundles. This lead onto the preparation and submission of the Decommissioning Programme. PDi has and will continue to provide ad hoc support through the execution of the offshore decommissioning.

Our Scope

PDi was engaged by Maersk Oil UK (now Total E&P) to provide support for the decommissioning of the subsea infrastructure at Leadon. The Leadon field consists of a 4km pipeline bundle, two towheads, a midline structure (MLS), riser bases, 4” flexible flowline, numerous tie-in spools, jumpers and xmas trees.

Leadon was the first bundle to be considered for decommissioning, and so significant regulatory and stakeholder involvement was required, culminating in approval of the Decommissioning Programme in 2015.

PDi’s scope included:

  • FEED study to develop decommissioning options and cost estimates
  • Option Selection Comparative Assessment
  • Development of the Decommissioning Programme for submission to BEIS, including stakeholder engagement and EIA support.
  • Ongoing support for the planning and execution of Leadon decommissioning operations.

Total E&P / Maersk Supply Service




January 2009 (Ongoing)

Download Full case study

To discuss similar projects performed by PDi and any related requirements that you have, please contact us.

Make an Enquiry
Previous: FPSO Decommissioning
Next: Removal of Subsea Infrastructure