offshore wind foundations design, installation and … wind foundations design, installation and...
TRANSCRIPT
28 SeptemberMillenium Hilton Seoul
Yunsup Shin, Per SparrevikNorwegian Geotechnical Institute (NGI)
Offshore wind foundations design,
installation and monitoringInnovation DayClean Energy Seminar, Innovation Norway
Houston - 2002
Oslo (HQ) - 1953
Trondheim - 2005
Kuala Lumpur – 2009
(JV with G & P)
Perth - 2014
NGI - Private independent foundation
• Established 1953
• R&D and consultancy work
• National and international clients
• Cooperation with universities and research institutes
Key figures
• No. of employees = 250 worldwide
• Around 35 nationalities
• Turnover = 430 million NOK 6 % from Norwegian Research Council
• About 1/3 Offshore Energy
Paris - 2015
History - projects
1950 - 70Subway and railway through Oslo centerQuick clay and slidesDams and power generation facilitiesDevelopment of DSS
1970 - 80Oil and gas adventure in NorwayEstablish and develop snow avalanche centre at StrynefjelletDevelopment of the Q-method
1980 - 90Develop geo-environmental technologyGullfaks C platformTragic snow avalanche in Vassdalen
History – projects
1990-00Environmental work at Hærøya New OSL Gardermoen airportSnorre and Troll A platformsSuction anchor technologyLærdal road tunnel – world’s longest
2000-10Ormen Lange - StoreggaEM technology - EMGSTsunami researchUnder water deposit in Oslo harbour
2010-nowLarge developments in offshore windReliability based design
Geohazard site investigation, offshore Newfoundland
Offshore windfarm, Maryland
Geohazard study, Gulf of Mexico
Geohazard Study, Brazil
Jetty and breakwater design, Uruguay
Anchor Design, Australia
Windfarm R&D study, Korea
Jackup Assessments, Qatar
EQ and pipeline design, Azerbaijan
Nearshore SI and design, RussiaIntegrated ground model, Barents Sea
Numerous windfarms, North Sea
Offshore client support, India
Geohazard study, East Africa
Selected NGI projects worldwide – last 12 months
Gas Hydrates, Black Sea
Pile and anchor design, Norwegian Sector
Anchor trenching studies, West AfricaManifold Design, Indonesia
Suction pile design, Egypt
Exploration Field planningProject
development
Installation
OperationLife extensionDecomissioning
Drilling hazardsGeophysicsJack-ups
Geohazard evaluationIntegrated geomodelSite investigationsPipeline routing
Foundation designPipelines and subseaAnchoringSeismic design
Suction anchorsPiled foundationsPipelinesInstrumentationTrenching
Operational monitoringShallow gasConductor/riser performance
Foundation assessmentPerformance increaseMooring integrityReliability based design
RemovalRe-use
Offshore project life cycleNGI services
Part 1
Part 2
Part 1:
Offshore wind foundations design
Monopile foundation
GBS foundation
Bucket foundation/anchor
Jacket foundation
Others
Offshore foundation – Monopile foundation
NGI – optimising monopile design
Track record of projects for major operators, including London Array, Anholt, Dudgeon
Refined and efficient 3DFEA to calibrate analytical models
Reliable modelling of cyclic response in sand, clay and chalk
Large scale field testing of monopile installation and lateral response
Monopiles – NGI experience
Generally governing for overall dimensions and weight
Offshore foundation – GBS foundation
GBS – NGI experience
• First Offshore CPT in 1972 with NGI
16 concrete platforms
• Soil Investigation• Lab testing• Soil properties• Foundation design• Instrumentation
Ekofisk tank Dolwin 2 GBS
Troll A
Offshore foundation – Suction caisson
Timeline for evolution of suction anchors
2000
1500
1000
500
Wate
r de
pth
(m)
Perm
ane
nt S
uctio
nan
ch
ors
insta
lled
Year
200
400
600
800
1000
1985 1990 1995 2000 2005
Floaters and subseaFixed platforms
25000
1980 2010
DianaGoM
Northwestgateway
Hanze/Ardmore
MarlimSemi/FPSO
Trent
Gullfaks CPenetration
testSnorre
TLPTroll GBS platform
Draupnerjacket
Offshore
wind?
Njord/Visund
N'Kossa
AquilaFPSO
ÅsgardA &B
Girassol
Horn mountain
Nakita GOM
Bonga
Thunderhorse
Suction caisson – NGI experience
Pull-out (or push-in) failure
Calculated Measured
Snorre model tests Jackets, tripods and monopods: • Efficient foundation design• Low-noise installation• Track record in oil and gas sector
(Sleipner, Draupner..)• First installation for offshore wind
turbine(Borkum Riffgrund) designed by NGI
Suction anchorsHywind Scotland
Proven offshore anchoring technology –
pioneered by NGI and Statoil in the 1990s
NGI performed FEED and detailed suction
anchor design as well as advanced
laboratory testing
Installation in 2017
30+ years of experience, competence and quality
Offshore piles for jackets: • Full geotechnical design for
concept, FEED and detailed design
• 3D FEA modelling of piles and pile groups to capture foundation performance
• Reliability-based design to improve understanding of risk
Jacket foundation – NGI experience
Site investigation
NGI – a reliable partner from the first day of your project
Fully integrated and comprehensive project teams in geotechnics, geology and geophysics
Leading the way with R&D application in projects
Geohazard site assessment─ Hazard mapping─ Integration of geophysics, geotechnics,
geology─ Slope stability and debris flows─ Pipeline route optimisation─ Drilling hazard assessments
Seismic response and EQ design─ Probabilistic seismic hazard assessment─ Site response analyses─ Dynamic soil-structure interaction─ Liquefaction
Marine Geohazards and earthquakes
Advanced laboratory testing
High quality and capacity: • Triaxial testing (CAU, K0, small strain)• Direct simple shear (DSS)• Oedometer (IL and CRS)• Cyclic testing• Resonant column• Ring shear• Schmertmann Research Laboratory
NGI – market’s broadest and most flexible array of analysis solutions for optimal design
NGI’s «DNA» = fundamental understanding of soil behaviour, including cyclic response
Always «fit for purpose», everything from hand calculations to advanced 3D FEA with non-linear soil models
Unique combination of optimised soil models and efficient analysis to provide accurate and good value
Analysis solutions