From conceptualization to designTyra South East A is a minimum-facility wellhead platform tied-back to the Tyra East host platform. In the design phase, Ramboll carried out:
- Tie-in studies
- Detailed engineering for the monotower substructure
- QRA (Quantitative Risk Assessment)
A minimum-facility platformThe platform design was based Maersk Oil’s STAR platform concept accommodating up to seven wells. The concept for the platform was normally unmanned; – and only manned during daylight and favorable weather conditions allowing safe access by boat. The primary escape was via FRB (fast rescue boat) to the nearby standby boat. The minimum-facility platform concept implied that there were no personnel facilities other than a shelter for bad weather.
Production exported to host platformThe well stream at Tyra South East A is separated in a two phase separator and the liquid is exported at low pressure outside the hydrate formation region, while gas is exported at high pressure and inhibited with hydrate inhibitor. The production is exported to the Tyra East host platform where it is tied-in to the existing gas treatment and condensate stabilization facilities.
The monotower substructureRamboll's scope of work comprised the detailed design of the monotower substructure sitting in 43.6 m water depth. In connection with the monotower design, Ramboll carried out all required structural analyses such as:
- Boat impact
- Lifting and transportation