Intelligently engineered intervention and abandonment campaigns

Our shallow and deepwater intervention and abandonment analysis gives operators the clarity needed to safely plan and execute late-life well activities. We assess structural integrity, equipment readiness and loading behaviour, helping operators address re-entry challenges and understand system performance. The result is: reduced uncertainty, optimised equipment selection, predictable outcomes, and more efficient decommissioning.

Intervene and abandon with confidence

As assets age, uncertainties around structural condition, load response, and equipment compatibility grow, making rigorous analysis essential.

Our work spans the full late-life well lifecycle of shallow & deepwater projects. Supporting interventions that restore productivity, assessments that verify continued safe operation, and plugging and abandonment, a major driver of global decommissioning costs. To ensure that well access systems perform safely and efficiently, our analysis delivers operators dependable insights. Achieved by validating conductor integrity, system behaviour, and configuration suitability. This analysis reduces risk and builds operational confidence.

  • Confirm System integrity via: strength, stability, corrosion and wall thickness checks to confirm readiness for late-life operations.‑thickness checks to confirm readiness for late‑life operations
  • Define safe operating limits via: fatigue evaluation, load path modelling, tension optimisation and response to operational and environmental forces.‑path modelling, tension optimisation and response to operational and environmental forces
  • Validate operational configurations via: reviews of equipment fit, rig suitability, and decommissioning or intervention setups to ensure safe, efficient execution

Structural integrity and fatigue

  • Strength and stability analysis
  • Corroded conductor integrity assessment
  • Fatigue analysis (historic, decommissioning, and future operations)

Operational planning and system optimisation

  • Well loading calculations and vertical tension optimisation
  • Optimisation of decommissioning equipment
  • Assessments to aid rig selection

Conductor maintenance and repair

  • Minimum allowable conductor wall thickness assessments
  • Conductor repair analysis and optimisation

Laying the groundwork: well access analysis

Re-entering ageing wells often involves uncertainty. For instance, missing historical data, corroded conductors and higher load demands from modern equipment on legacy equipment are just some challenges that may need to be navigated.

We help reduce this uncertainty by analysing system behaviour during running, hang-off, retrieval, disconnect operations, and define safe operating limits based on vessel motion & metocean conditions. Our assessments of conductor integrity, structural capacity, fatigue performance and configuration suitability give operators a clear understanding of what the well can safely support. This allows teams to plan intervention, continued operation or abandonment with greater confidence, fewer unknowns and more predictable outcomes. Making late-life campaigns easier to manage and safer to execute.

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Products

Drilling

Proven, flexible and integrated drilling well access solutions, improving efficiency across subsea developments.

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Intervention
& abandonment

Riser-based systems for safe and reliable well re-entry, for intervention and abandonment operations.

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Offshore analysis

Intelligent analysis supporting confident delivery, smarter investment and sustained project success.

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Carbon capture & storage

Expert CO₂ storage solutions, supporting tomorrow’s energy transition.

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Subsea

Integrated subsea systems connecting seabed infrastructure through to surface operations.

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Tensioning

Trusted tension capabilities built for ease, longevity and performance.

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Platforms

Innovative offshore platforms tailored to unique project needs, from concept to installation.

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Offshore equipment & services

Delivering a full suite of specialist products, supported by decades of offshore expertise.

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