Steady State Parametric Analysis:
Thousands of steady state cases provided key operating data and system insights which were required to finalise the development’s FEED designs. Data from the cases included:
- Operating temperatures and pressures
- Liquid holdup volumes
- Erosional velocity limits, and estimated erosion amounts throughout the system
- Production and gas injection systems’ deliverability curves
- Minimum turndown rates to prevent a range of FA issues
Transient Flow Assurance Analysis:
A large number of transient analyses defined the transient behaviours of the system, including:
- Commissioning and start-up sequences to avoid minimum design temperature exceedances, and to optimise chemical dosing volumes
- Transient liquid surge sequences to define liquid volumes at the FPSO
- Flowline depressurisation sequences to support the Insulate and Blowdown hydrate management strategy (including FPSO restriction orifice sizing to prevent excessive flexible riser depressurisation rates)
- Gas injection system transient cases, defining the behaviour of the near-critical fluids in the gas injection flowline and wells.
