Existing technologies

Subsea systems - deployable technologies

Areas Technologies
Low cost subsea options
  • Mechanically connected pipe systems (Perenco, Wintershall)
  • Low cost pipelines (Premier, Wintershall)
  • Low cost subsea tiebacks and platforms for small discoveries (5+ operators)
  • Long/deep water subsea tiebacks (Siccar Point)
  • Standardisation and optimised design of subsea systems (Total)
  • Subsea hot tap technology (NSMP)
  • TCP flowlines and jumpers (Anasuria, Dana)
  • Low cost subsea concepts (5+ operators)
Subsea boosting
  • Small scale compression and local power generation (Total)
  • Increased oil recovery through subsea separation and pumping
  • Subsea pumping systems (5+ operators)
Flow assurance and metering
  • Multiphase subsea flowmeter (Alpha, Marathon)
Subsea inspection and maintenance
  • Efficient subsea inspections and monitoring systems (5+ operators)
  • Intelligent pigging systems (5+ operators)
  • Pipeline wax removal (Total, EOG Resources)
  • AUVs for subsea inspection and monitoring (Shell, RepsolSinopec)
  • Marinising more inspection and detection tools (Total, RepsolSinopec)

Supporting information

Low cost subsea options


  • Chevron, Equinor, Shell, Total and Apache have experience of long subsea tiebacks (up to 190km) including deep water applications
  • Lower cost pipelines (mechanically connected pipe and composite pipe) could provide
  • Capex efficiencies, enabling marginal discoveries and remote fields
  • Grouted tee and mechanical hot taps have been used extensively in the Gulf of Mexico but not in the UKCS

Multiphase flowmeters


  • Subsea MPFMs are in use by a large number of operators worldwide (e.g. BP, Shell, Petronas, ExxonMobil and Equinor)
  • Individual metering subsea has the potential to identify under performing wells and improve production optimisation

Multiphase boosting/pumping

  • Shell, Equinor, Total, Chevron and ExxonMobil have experience of multiphase boosting and pumping systems
  • Subsea multiphase boosting provides increased recovery, topsides simplification and long tie-back applications

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