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Comprehensive Late Life & Decommissioning Solutions

We deliver end-to-end decommissioning solutions across all phases of the asset lifecycle – from late-life operations and decommissioning strategy through to safe removal and disposal. Our integrated approach combines project management, engineering, procurement, and execution, supporting discrete scopes, bundled packages, or fully outsourced delivery models.
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Our decommissioning team brings over 50 years of combined experience, having contributed to more than 100 decommissioning projects delivering discrete, integrated, and fully outsourced scopes across the decommissioning work breakdown structure.

Supported by comprehensive in-house capability, extensive delivery experience, and a network of more than 50 supply chain agreements, we provide certainty of service and supply to the decommissioning sector.
Success Stories
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Atlantis UAE: Decommissioning
7,600
7,600 ft MDBRT – Deep well P&A delivered in a high-pressure, high-risk environment
1
First-pass success using an innovative Bismuth alloy barrier system
“By integrating wells and facilities decommissioning planning from the outset and applying proven technology in a new operating environment, the team delivered a safe, efficient abandonment solution under challenging well conditions.”
Technical Director
Elemental Energies
Overview
Elemental Energies delivered integrated decommissioning solutions for a complex offshore campaign in the United Arab Emirates, providing full lifecycle decommissioning project management and engineering for deep well abandonment under challenging conditions.
Challenge
The project presented major technical challenges, including milling deep and extended casing windows at 7,400–7,600 ft MDBRT – well beyond typical slot recovery depths. Minimum P&A requirements drove milled sections of approximately 200 ft through heavy P-110 casing, significantly increasing operational complexity and risk in a mobile gas environment.
Solution
A fully integrated decommissioning approach aligned wells and facilities planning from early engineering through execution. A bespoke abandonment solution was developed using a combined inflatable plug, Bismuth alloy barrier, and cement system, reducing milling requirements and delivering a robust, regulator-approved P&A outcome on first deployment.
Integrated Project Management & Control
We provide dedicated project management and control tailored specifically to decommissioning programmes, supporting assets from late-life strategy and EPRD development through to execution. Our approach focuses on integrating wells, facilities, subsea, and regulatory workstreams to reduce interfaces, manage risk, and improve cost and schedule certainty across decommissioning campaigns.
Global experience across all elements of decommissioning programmes, including high-complexity and multi-scope projects
Fully integrated, multi-disciplinary teams experienced in managing decommissioning interfaces across wells, facilities, subsea, and onshore disposal
Embedded cost, schedule, and risk management aligned to decommissioning execution and regulatory milestones
Late Life Optimisation and Assurance
Late-life optimisation is critical to both OPEX efficiency and effective decommissioning execution. We apply a dual-lens approach that balances ongoing operational requirements with decommissioning readiness, ensuring assets transition efficiently towards cessation of production.
Operations and maintenance rationalisation, aligned with decommissioning planning and organisational transition
Anomaly rationalisation, hazardous materials surveys, and identification of reuse and recovery opportunities
Safety case management, performance standards assurance, and asset transition assurance
Well P&A and Enablement
Wells P&A execution is delivered by our specialist wells teams, working as part of a fully integrated decommissioning team. Together, we enable efficient and coordinated wells P&A planning within the wider decommissioning programme. Wells planning is embedded within EPRD development and execution, ensuring full alignment with facilities decommissioning, subsea scope, regulatory approvals, and campaign-based delivery. 
Full-scope P&A across jurisdictions and regulations 
Platform and subsea experience, including LWIV deployment
Extensive experience in platform and subsea enablement
Topsides, Subsea, and Pipeline Isolation and Cleaning
We deliver execution-led topsides, subsea, and pipeline isolation and cleaning across the project lifecycle—optimising critical interfaces with asset operations and interventions, well P&A, prep, removal, and disposal to maximise value, reduce risk and cost.
EDC / DPFV and isolation strategy
Topsides, subsea, pipeline, and process detailed engineering, design, and procedure development
Offshore delivery and contracting
Topsides Preparation
Our team brings deep expertise in safe and efficient topsides preparation for removal, including complex module separation, single-lift campaigns, and FPSO removal – working seamlessly with the removal asset contractor or as primary contract holder
Piece small removals, air gapping, moth balling, and asset modifications
Module separation, sea fastening, and deck strengthening
Offshore delivery and contracting
Topsides and Substructure Removal
We deliver safe, efficient removal and disposal scopes as primary or secondary contractor – combining structural, subsea, marine and disposal expertise with formal supply chain partnerships to ensure compliance, sustainability, and zero-harm outcomes.
Removal / Lift engineering and ALARP demonstration
Rigging, sea fastening, conductor and caisson cutting and removal, pile cutting, temporary equipment engineering, design, & delivery
Contacting / subcontracting with removal asset
Disposal
We integrate topsides and substructure disposal into front-end planning – leveraging in-house capability and trusted partners to maximise onshore work, reduce cost and risk, and deliver safe, sustainable asset retirement once the topsides and substructure is received.
IHM surveys, HAZMAT and material inventories, and re-use manifests  
EDC, dismantlement and disposal, and site move engineering
Permitting
Subsea Infrastructure
We deliver execution-led, subsea infrastructure and pipeline removal across the project lifecycle levering our formalised relationships – optimising critical interfaces with asset operations and interventions, isolation and cleaning, subsea well P&A, asset removal, and disposal to maximise value, reduce risk and cost.
Subsea and pipeline preparation and removal engineering, design and delivery
Vessel and cutting supplier engagement and contracting
Campaign definition and execution management
A SELECTION OF OUR TECHNICAL EXPERTS
Jessica Lyon
Senior Manager – Decommissioning Solutions
,
Elemental Energies
Accountable for full lifecycle decommissioning delivery—from front-end strategy to execution—across discrete, integrated, and outsource scopes, leveraging 15+ years’ experience including some of the world’s largest decommissioning projects
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Ross Provan
Head of Decommissioning
,
Elemental Energies
Overall accountable for full-lifecycle decommissioning delivery, leveraging more than 19 years’ experience, including leadership of complex, large-scale decommissioning programmes across wells, subsea infrastructure, and topsides.
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Case study
Atlantis UAE: Decommissioning