Decom Mission

Wood is the largest provider of brownfield services to the oil and gas industry;

providing pre-operations, hook up & commissioning, operations & maintenance, engineering, construction, project management, training, late life asset management and duty holdership into decommissioning.

Decommissioning is a core WGPSN function with over two decades of experience. Our Aberdeen-based Decommissioning Centre of Excellence (DCoE) provides seamless comprehensive access to our decommissioning services across all WGPSN global regions and may be provided as a standalone service or as an integrated service. Wood Group can support all phases of the decommissioning activity from topside and subsea decommissioning expertise, late life of field operations through facility preparation, removal, final disposal and close-out.

As the leading oil and gas contractor on mature assets, you can trust us to prepare plans, facilitate the removal of your redundant facilities safely, cost effectively, and in an environmentally appropriate manner that maintains your reputation.

We now apply that unique insight to ensure the safest and most efficient approach is chosen for the End of Field Life phase to optimise P&A support, de-energising, physical isolation & cleaning, topsides preparation, substructure preparation, and site remediation.

Xodus offers an independent, integrated capability to develop decommissioning programmes in line with best practice and the changing legislative requirements.

Our capability covers all aspects of decommissioning including subsea facilities, wells, jacket/supporting structures, topsides and onshore facilities. We offer practical knowledge and experience of the regulatory framework for decommissioning. Our consultants are industry recognised experts who have been involved in the development of statutory policy and industry best practice for decommissioning. Our integrated approach enables us to efficiently manage the interfaces with a team of experts offering the key skill sets of Environment, Technical Safety & Risk, Process & Facilities, Subsea and Subsurface.

Zenith Energy Limited is the UK’s largest independent consultancy providing well engineering and well project management solutions both within the UK and Internationally. Zenith provide specialist expertise for the complete well life cycle from the conceptual design phases through to field development planning, well operations, well intervention and well abandonments. Since inception, Zenith has experienced significant growth building a strong reputation and a diverse portfolio of global customers and an experienced team of highly skilled technical staff.

Areas of core expertise include:

Well Engineering – Conceptual Well Designs, Feasibility Studies, Time & Cost Estimates, casing design, Rig Audit and acceptance & Engineering Support

Project Management – Drilling, Well Testing, Completions and Subsea Project Management

Well Abandonment – Conceptual design (rig / rigless operations), P&A strategy, Time & Cost Estimates, Well Abandonment Programmes, Regulatory Permitting and onsite supervision

Completion & Well Testing – Completion and well test planning, equipment specification and selection, ITT, artificial lift requirements, sand face completion selection and operations management

Consultancy Services – Sourcing and Supply of experienced Well Engineering Personnel

The UK leader in environmental solutions, Veolia provides a comprehensive range of waste, water and energy management services designed to build the circular economy and preserve scarce raw materials.As an extension to this we offer decommissioning services from industrial cleaning, decontamination, dismantling and demolition.

We have a wealth of engineering expertise in providing environmental decommissioning solutions, including the decontamination and deconstruction of structures, waste management and environmental services. As the disposal contractor, we’re able to offer a solution for every decommissioning strategy, whether it be Piece Small, Reverse Installation or Single Lift.

We have a series of strategically-placed facilities to cover all of the UK and Norwegian North Sea assets. Our Greenhead facility at Lerwick Harbour, in Scotland, has an unrivalled track record in reverse installation, barge offloading and subsea equipment, servicing the central and northern North Sea. Our newly developed deep-water Dales Voe decommissioning facility can accommodate the biggest heavy lift vessels and rigs, as well as having the flexibility to handle smaller operations.

Meanwhile, at the most northern tip of the North Sea, the Norwegian facility of Lutelandet has great yard capacity and can accommodate several large platforms simultaneously via a range of load-in techniques.

The Great Yarmouth outer harbour decommissioning facility is ideally situated for disposal of Southern North Sea platforms within easy sailing distance for removal contractors.

Sureclean is driven by a vision: “Inspiring innovation to advance environmental sustainability, reduce waste, and protect the planet for future generations.” As a specialist contractor within the decommissioning landscape, Sureclean offers comprehensive solutions across three pillars of service:

• Industrial Cleaning: Leveraging advanced techniques, including non-man entry and long-range vacuum pulling, Sureclean optimises safety and efficiency in complex decommissioning projects.
• NORM Decontamination: As a recognised leader in NORM decontamination, Sureclean utilises water-processing technologies, such as tangential flow filtration, to reduce waste and optimise resource use.
• Environmental Spill Response: Sureclean is equipped to handle emergency spill responses, helping clients maintain readiness and rapidly address environmental hazards, reinforcing their commitment to environmental stewardship.

Operating internationally with bases in the UK and Middle East, Sureclean integrates its expertise and innovative practices into every project, aligning with Decom Mission’s goals to support sustainable, efficient, and safe decommissioning across global industries.

Shipping, Energy & Insurance Lawyers

We provide reliable, high quality legal solutions to clients who have high value, complex shipping, energy and insurance related claims, freeing them up and helping them to achieve success.

We are adept at dealing with technically complex offshore and engineering legal issues. We have technical knowledge and experience within our legal team in the fields of naval architecture and offshore engineering to help guide you through all issues, including disputes involving pipelines, jack-ups, semi-submersibles and FPSOs. Our team of Master Mariners are available to assist on the shipping side of disputes, whether that be in relation to specialised offshore support vessels or the largest oil tankers.

Thomas Muir (Rosyth) Ltd is a new branch of a family business originally formed in 1948.This has been done with the intention of providing an onshore disposal facility for redundant offshore materials at Rosyth, a deepwater port on the Firth of Forth in East Central Scotland.

Thompsons of Prudhoe are a specialist Demolition, Deconstruction, Decommissioning, Industrial Dismantling, Asbestos Removal and Hazardous Waste Removal contractor involved in the onshore Dismantling, Size Reduction, Asbestos Removal and Waste Treatment work for the offshore decommissioning sector.