Generated by the worldenergydata field-development playbook (epic #567). Recommendation is heuristic (Concept Select / FEL-1 fidelity), not a sanctioned design.
Chinook is a Lower Tertiary Wilcox field in ~2690 m of water developed jointly with neighboring Cascade by tying subsea wet-tree wells back ~24 km (15 mi) to the shared BW Pioneer FPSO, the first FPSO ever to operate in the US Gulf of Mexico (moored over the Cascade area). With no nearby pipeline infrastructure and ultra-deep water, a disconnectable internal-turret FPSO with shuttle-tanker offloading was selected over a fixed host. The long subsea tiebacks of waxy, low-GOR Wilcox crude create severe flow-assurance constraints (cooldown limits if flow stops beyond ~12 hours), and the wells use free-standing hybrid risers and seabed boosting; operatorship passed from Petrobras to Murphy Oil, which also bought the FPSO in 2025. Notable: Tied to BW Pioneer, the first FPSO deployed in the US Gulf of Mexico.
| Concept | Score | Trees | Rationale / flags |
|---|---|---|---|
| subsea_tieback ★ | 0.847 | wet | host within 60 km with spare capacity |
| subsea_to_shore | 0.734 | wet | — |
| fpso | 0.688 | wet | — hurricane regime: FPSO needs a disconnectable turret |
| flng | 0.622 | wet | — |
★ = the concept actually selected for this field (where known).
Sources: SubseaIQ field catalog (~2014) + BSEE + curated vessel/ subsea catalogs. Schematics are deterministic, generated from the field concept.