Decommissioning

As per Petroleum Act 1998 (UK), at the end of subsea asset economic life, detailed decommissioning program will need to be submitted to Offshore Petroleum Regulator for Environment and Decommissioning (OPRED).

Our consultant engineers can help either operators or subsea contractors manage the decommissioning work packages.

The experienced consultant engineers will manage the full scope of work packages including liaising with reputable Waste Management Contractors.

This can either be the following (but not limited to):

  • Removal of concrete mattresses

  • Removal of manifolds, riser bases and other subsea structures

  • Removal of subsea risers, umbilicals, flowlines and jumpers

  • Removal of spools, pipelines between buried sections (rockdumped) and subsea structures

  • Removal and recovery of piles

  • Recovery of any subsea debris that is prohibiting fishing activities

Decommissioning Activities

  • Cutting of Spool using DWS

    DWS performing the subsea cuts on the Spools / Pipelines

  • Removal of Pile

    Recovery of cut piles within subsea structures

  • Structure Size Reduction

    Reducing the size of recovered structures at the dedicated quayside.

  • Recovery of Cut Spools

    Spools / pipelines are cut using Subsea Shears and relocated to subsea basket