Dan Dolan. Presentation-Offshore Platform Technology
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Feasibility of Offshore Wind in the US
Offshore wind is a proven technology
– Viable options exist today to develop offshore
resources
Major cost reductions will likely come from EPC
competition
– Innovative construction equipment and techniques
– “Batch” fabrication and construction
– Concept refinement will have less impact
New concepts will expand the reach of offshore
development
Offshore Oil and Gas
Experience
Technologies/Experience
Over 6,000 platforms
installed to date worldwide
– Fixed and floating
– Monopiles and complex
jackets
– Rigid and compliant
Environmental conditions
– Hurricane, wind, earthquake,
ice, mudslide
25,000+ piles installed
Are all oil and gas platforms large?
Is this
relevant?
Minimal Platforms
Gulf of Mexico Installations
Current
~4000 Installations
0
50
100
150
200
250
300
350
400
450
500
10 100 1000 10000
Water depth (ft)
Number
(per 20 ft increment in W.D.)
Caissons
Jackets
Compliant Towers
Spars
TLPs
Watch out for the tails
Value
Frequency
Load
Resistance
Factor of
Safety
Design for 50 year or 100 year storm?
Storm Overload Examples
Main Pass 209A after Katrina
Storm Overload Examples
Mars TLP after Katrina
Storm Overload Examples
Hurricane Rita Damage