Client: Dana Petroleum
Location: UK North Sea
The Western Isles Development Project will be developed using a floating production, storage and offloading (FPSO) facility.
Oil will be exported by shuttle tanker and excess produced gas will be exported through a dedicated pipeline to Tern-NC gas line. The subsea facilities will be tied back to the floating production facility by a subsea pipeline bundle including flexible risers. Water injection is required to maintain the reservoir pressure and gas lift is also required to assist production.
- Flow assurance
- Pipeline mechanical and structural design
- Design and specification of flowline and pipeline and tie-in systems
- Dynamic analysis of the flexible riser system
- Control system and umbilical design
- EPCI cost estimate and schedule
- ITT bid evaluation.
- Multidisciplined integrated service offering
- Full suite of subsea FEED engineering to support EPIC tendering
- Experienced flexible riser team.
- Multiple FPSOs required 18 month FEED in order to develop subsea solutions for three FPSO options
- Two separate EPCI ITTs required due to lack of decision on FPSO selection
- Large number of risers versus MWA versus flow assurance complexity
- Decisions with manifold size and well count delayed until late in FEED – requirement for rework
- Export / import pressure discussions with Tern early in FEED.