Existing technologies

Facilities decommissioning - deployable technologies
Areas	Technologies
Surveying and planning	3D printing – complete scale model of platform for planning of module removal sequence (CNR)
Late life asset management	Low-power lighting for ‘light house mode’ (Perenco)
Topsides and jacket preparation and removal	Gravity-based structures content sampling (Shell, Apache) Jacket lifting clamps (CNR) Remotely operated latching pins for jackets (CNR) Supersizing diamond wire cutting (CNR) Remotely operated vehicles (ROVs) and cutting tooling (Fairfield) Single lift for topsides and jackets (Shell, Apache, Chrysaor, EnQuest) Shear keys for gravity based legs (Shell)
Subsea decommissioning	Pipeline decommissioning (NSMP) Long-term subsea substrate modelling (Perenco) Tool to cut, seal and lift bundles (CNR) Methods to hot tap, flush and grout subsea pipelines (CNR) Anchor handling vessel and reverse reel for riser removal (Ithaca)

Digital technologies and asset management tools utilised on producing assets will provide future CoP efficiency benefits
- detailed asset and material knowledge
- support planning / selection of decommissioning process
To support decommissioning of the Murchison platform, CNR utilised an interactive 3D topsides model. Premier have built a virtual walk through model of the Balmoral floating production vessel (FPV)
Like the nuclear industry, operators should consider how to use additive manufacturing for use in facilities in late life stage.

To maintain efficiency gains innovative for surface and subsea structure removal is necessary
- enhance current techniques (e.g. hydraulic grapple tools)
- alternative technologies (e.g. buoyancy barges)
Shell’s Brent decommissioning programme has delivered ongoing technology innovation
- attic oil sonar survey
- oil recovery from topsides
- conductor laser cutting
- use of shear keys and single lift interface system