In today’s energy sector, advanced software and technology are essential to managing the growing complexity of subsea systems, optimising performance and reducing operational risks.
From multiphase flow simulation with OLGA and PIPESIM, to fluid modelling with Multiflash and process simulation using HYSYS, these tools allow engineers to design and evaluate systems with greater accuracy and efficiency. Structural integrity and dynamic performance are assessed with Abaqus, Orcaflex, and Maximus, while tools like StableLines, NaviModel and CAD platforms support stability analysis, terrain modelling and precise design. Together, these technologies turn data into actionable insights, enabling safe and sustainable project delivery across the field lifecycle.
For over 30 years, Jee has been at the forefront of this digital transformation, delivering global subsea and offshore engineering solutions through technical expertise and ongoing training, ensuring its teams are fully equipped to apply the most advanced tools on every project. Here are some examples of how data-driven solutions are applied to complex offshore and subsea projects worldwide.
- OLGA – Multiphase Flow SimulationWidely regarded as a leading multiphase flow simulator, OLGA is key to solving complex flow assurance challenges.
North Sea Pipe-in-Pipe Project
Jee conducted detailed cold start-up analysis for a gas condensate system using methanol injection. Compositional tracking was used to study the Joule–Thomson cooling effect in detail, which complicated the dosing strategy due to delayed thermal recovery in the pipe.
820 km Oil Pipeline Assessment
The longest onshore line analysed by Jee included multiple pump stations and electrical trace heating to mitigate wax deposition, a challenge addressed using OLGA’s robust capabilities.
- PIPESIM – Steady-State Flow ModellingPIPESIM is the industry-standard tool for single-phase flow analysis.
Field Concept Design
Jee used PIPESIM to rapidly compare field layout options by evaluating hydraulic and thermal limitations, then estimated CAPEX and OPEX for each viable configuration.
Well-to-Platform System Evaluation
A full system analysis—from wellbore to platform—was conducted in the North Sea, including electric submersible pumps and gas lift strategies to assess performance over field life.
- Multiflash – Fluid Characterisation and PVT ModellingMultiflash supports fluid file generation and property tuning for hydraulic simulators.
Routine Simulation Support
Used in conjunction with OLGA and PIPESIM, Multiflash enables Jee engineers to develop and refine fluid models, troubleshoot anomalies, and align simulations with lab data and field performance.
- HYSYS – Process SimulationHYSYS is the go-to tool for chemical process modelling.
Carbon Capture in Belgium
Jee modelled the full CCS process—from the plant to storage tanks and ship offloading—assessing boil-off rates, thermal performance and fluid behaviour to optimise layout and design.
LNG Power Plant in Myanmar
Detailed simulation of regasification, heating, and pressure reduction systems helped evaluate component performance and determine operational requirements.
- Maximus – Integrated Production & Transport Network SimulationMaximus enables full-field performance assessment, including lifecycle analysis.
Gas Import Feasibility Study
Evaluated offshore-to-onshore gas transport from an FPSO in the Caribbean, comparing route options and pipeline sizing, while determining compression needs.
Wax Deposition Analysis
Used with Flowax, Maximus helped calculate wax build-up and define pigging schedules for a heavily impacted pipeline.
- Abaqus – Finite Element Analysis (FEA)Abaqus is used for advanced structural and thermal simulations.
Corrosion Assessment
A Shetland pipeline was analysed for burst resistance and remnant life using detailed API 579-1 Level 3 modelling of corrosion defects.
Pipeline Span Fatigue
A 36” oil pipeline in the North Sea was modelled to assess span behaviour and fatigue life beyond DNV-RP-F105 limits.
Thermal Sensor Placement
Analysis of a North Sea wellhead tree revealed poor sensor positioning, leading to design revisions for improved temperature accuracy.
- Orcaflex – Dynamic Marine System AnalysisOrcaflex models the dynamic behaviour of subsea systems.
J-Lay System Study
Various stinger alternatives, including rollers and curved pipes, were analysed for a shallow-water rigid pipelay system.
Cable Protection in Offshore Wind
Dynamic event simulations helped design cable management systems by quantifying forces at interfaces and informing protection strategies.
- NaviModel Analyser – Digital Terrain VisualisationNaviModel is used for 2D and 3D terrain mapping and risk assessment.
Pipeline Decommissioning
Survey comparisons over a decade supported risk assessments and inspection interval planning for decommissioned assets in the Southern North Sea.
Route Planning Support
Pipeline route visualisation and crossing identification helped inform span and roughness analysis using data fed into Abaqus.
- DNV StableLines – On-Bottom Stability AnalysisBuilt in Excel, StableLines complies with DNV-RP-F109 standards.
Cable Installation in Qatar
A 100 km subsea cable was divided into segments based on route conditions, leading to targeted burial and detailed re-assessment recommendations.
- AutoCAD / SolidWorks – 2D/3D CAD ModellingThese design tools are vital for spatial planning and equipment integration.
Piggability Assessment
SolidWorks modelled pig geometry within a new pipeline section, assessing the risk of blockage or interference during pigging.
Pigging Spool Route Selection
Laser scan data was processed in AutoCAD to guide modifications and fit a new pigging spool on a Côte d’Ivoire platform.
Advanced software tools are now indispensable in subsea engineering, enabling precise design, thorough analysis and effective risk management for increasingly complex offshore projects. From flow simulation to process and structural modelling, these technologies provide insights that promote safer, more efficient and sustainable operations. As subsea challenges evolve, integrating advanced software will continue to raise engineering standards and unlock new opportunities across the energy sector.
For more information on Jee, visit www.jee.co.uk or call +44 (0)1732 371 371.
