As early as Pre-FEED stage of a project, Z-Subsea flow assurance team get involve with preliminary calculations to input theproject design team regarding the system sizing, hydrate or wax formation and consideration for operational pigging or other design consideration. This preliminary analysis shall be updated during the FEED and detailed design stage of the project. Some typical activities to be performed includes the following activities:

  • Fluid property calculations using PVTSIM
  • Steady State analysis using PIPESIM (including pipeline sizing optimisation, pressure and temperature profiles, turndown, erosion velocity ratio, slugging etc.), Maximus and/or Delfi software
  • Hydrate and Wax management strategy
  • Insulation selection (U-value optimisation)
  • Liquid management and slug catcher optimisation
  • Transient analysis using OLGA (including Pipeline cool-down, restarts, ramp-up, packing, blowdown analysis)
  • HIPPS response time evaluation
  • Pigging simulation and optimization
  • Subsea Process drawing development e.g. P&ID, PFD, C&E diagrams
  • Design pressure & temperature philosophy
  • Choke valve sizing
  • Start-up and Shutdown operating guidelines
  • Hydrate remediation strategy
  • HIPPS system operational test procedures
  • HAZID & HAZOP, LOPA participation
  • Equipment duty specification/datasheet
  • Technical evaluation of vendor proposals

For more information about our flow assurance services please contact us or download our technical brochures