Allegheny SeaStar® TLP
The Allegheny SeaStar® TLP is based on the same hull geometry and payload characteristics as Morpeth, but is installed in twice the water depth, demonstrating the water depth flexibility of TLP’s. Fabrication began on this second SeaStar TLP as the construction of the first neared completion. The field was initially expected to produce approximately 30,000 bopd and 40 MMscf/d of gas, but was later increased to 190 MMscf/d to process and accommodate production from other area subsea tiebacks. SBM Atlantia’s scope of work was EPCi.
| Field Facts | |
|---|---|
| Location | Green Canyon, Block 254 |
| Water Depth: | 3,300 ft |
| Oil throughput: | 30,000 bopd |
| Gas throughput: | 190 MMcfd |
| Water Injection: | 15,000 bwpd |
| # of production wells: | 5 (sub-sea) |
| Production Risers: | 5 5-in SCRs |
| Export Risers: | 12-in SCR (oil), 12-in SCR (gas) |
| SeaStar® TLP Specifications | |
| Payload (deck/facilities/risers): | 3,750 tons |
| Tendons: | 6 28-in |
| Main column dimensions: | 58 ft (dial) x 112 ft (ht) |
| Pontoon dimensions: | 115 ft (r) x 25 ft (ht) |
| Draft: | 91 ft |
| Deck Dimensions: | 110 x 110 ft (2 levels) |
| Schedule Milestones | |
| Project Sanction: | January 1998 |
| Platform Installation: | June 1999 |
| First Oil: | August 1999 |
Allegheny SeaStar® TLP
SBM Atlantia
SBM Atlantia, Inc. supplies the energy industry with quality, experience, and innovation in floating production, drilling, engineering, and strategic investment solutions. Based in Houston, Texas, SBM Atlantia is a subsidiary of the SBM Offshore Group.