Subsea Systems


A holistic full system modelling approach for old and new wells which provides a more realistic view of well performance at every stage of the well’s life.

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Key Personnel
Alex Rimmer | Director | London
Alex Rimmer

Director, UK

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Holistic modelling approach offers benefits to old and new wells 

 Our experience with subsea dynamic loading, down hole tubular assessment and extensive background in fracture mechanics combine to offer a unique well engineering capability, modelling combined loads from the vessel, environment and the well itself. Using finite element analysis, we can zoom in on tubular sections and specific components of the well. When applied to full life cycle modelling, this extremely accurate approach allows us to develop the most cost-effective well designs and aids decision-making on the operation of existing wells. 

For well abandonment projects, we collaborate with sister company Claxton to combine virtual and physical aspects to create the best real-life solutions. 

Key Services 

  • Casing design verification 

  • Completion design verification 

  • Existing well analysis (casing & completion) 

  • Continued use (life extension) 

  • Change of use (conversion to injection, CCUS etc.)

  • “As-built” modelling 

  • Abandonment 

  • Survival/cap and contain 

  • Wellhead movement/load analysis 

  • Clashes

  • Hanger loads/lockdown 

  • Predictive movement charts 

  • In situ operational load 

  • Thermally compensated conductor analysis 

  • Trapped annular pressure analysis

  • Detailed well component analysis 

  • QA & mentoring services 

Design & Analysis Tools 

  • WELLCAT™ – casing, completion and wellhead analysis 

  • ANSYS – well component finite element analysis

  • CasingWear™ - Drill through casing wear simulations 

Project Track Record 

  • Shell – Well Repair & Recompletion 

  • BP UK – Foinaven wells decommissioning strategy and well abandonment study 

  • Chevron – Subsea wellhead failure analysis and well verification for continued use

  • TOTAL Congo – Buckling analysis of TLP completion and trapped annular pressure build-up

  • Shell Australia – Analysis of complex tieback platform well

  • Repsol – Failure analysis of a coiled tubing string  

  •  AkerBP - Fenris HPHT, NOAKA & Valhall PWP platform wells

  • Shell/KOC Kuwait – Combined ESP Pump and High Pressure Water Injection advanced completion analysis and FEA of pump and by-pass assembly

Key Personnel
Alex Rimmer | Director | London
Alex Rimmer

Director, UK

View bio

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