Field Development Plan — Cottonwood

Generated by the worldenergydata field-development playbook (epic #567). Recommendation is heuristic (Concept Select / FEL-1 fidelity), not a sanctioned design.

Engineering rationale

The engine's top recommendation (Tlp) differs from the concept actually built (Fixed Jacket). The recommendation is produced on a blind probe (the as-built concept stripped before scoring); the shortlist below shows where the built concept ranks. Divergence is expected where the real choice turned on data outside the engine's inputs (reserves, schedule, operator preference).

Field parameters

Water depth
670.0 m
Concept
fixed_jacket
Fluid
oil
Operator
W&T Offshore
Wells
Plateau
Tieback
First oil

Recommended concept shortlist

ConceptScoreTreesRationale / flags
tlp0.783drytypical of gom development practice
subsea_to_shore0.688wet
compliant_tower0.661dry
spar0.661drytypical of gom development practice
semisub_fps0.629wettypical of gom development practice

★ = the concept actually selected for this field (where known).

Economics & execution (engine estimate)

Dev system
subsea15
Est. CAPEX
300.0 $MM
Est. NPV
Install vessels
34
Max crane
14200.0 t
Hardware
MC-CH-R4-120

As built (actuals)

Block
Garden Banks 244
BSEE code
GB244
Operator
W&T Offshore
Concept (as built)
Fixed Jacket
Engine top pick
Tlp
Match
✗ differs

Architecture & layout (fixed_jacket)

Subsea architecture — Cottonwood TTR riser TTR riser TTR riser TTR riser export Export FIXED JACKET Well 1 Well 2 Well 3 Well 4
Subsea architecture block diagram
Field layout — Cottonwood Fixed jacket platform FIXED JACKET Dry tree / surface wellhead Well 1 Dry tree / surface wellhead Well 2 Dry tree / surface wellhead Well 3 Dry tree / surface wellhead Well 4 Export Export N 1 km
Plan-view field layout (to scale)

Sources: SubseaIQ field catalog (~2014) + BSEE + curated vessel/ subsea catalogs. Schematics are deterministic, generated from the field concept.