Created, optimised and compared a wide range of development options to identify best concept for GS3, including field architecture and detailed engineering to demonstrate performance and identify key contract strategies.

Integrated production modelling was performed to identify the best performing development scenarios using detailed steady state and transient thermohydraulic modelling. This enabled system performance to be optimised and to define mechanical design inputs.

The subsea architecture (including power, controls, trees, spools and manifolds) was designed and optimised across a range of vendor contracting strategies and for a specific vendor and installation contractor capabilities.

Application of automated scientific programming techniques across all mechanical design tasks for multiple combinations of well count, line size and development scenarios. Scope included routing, wall thickness, coatings, cathodic protection, on-bottom stability and on-bottom roughness.

Detailed Top of Line (TOL) and Bottom of Line (BOL) corrosion modelling based on Integrated Production Modelling (IPM) forecasting across a range of reservoir outcomes identified significant reductions in CAPEX through materials selection and coating configuration, and as input to system architecture.

3D whole system global buckling and walking models were used to determine the buckle initiation strategy and understand axial walking, suitable strategy to manage global buckling. An engineering critical assessment (ECA) was also performed to demonstrate fracture would not impose onerous welding constraints for installation contractors.