NGI and Offshore Energy
Outline NGI Worldwide Market areas and organization NGI Teams NGI Capabilities
Trondheim - 2005
NGI Worldvide
Oslo - 1953
Houston - 2002
Kuala Lumpur – 2009 (JV with G & P)
Private Independent foundation Established 1953 Research, development and high-end consultancy – offshore and onshore Two subsidiaries: NGI Houston and NGI Perth
Staff 225 employees from ~30 nations 20-30 guest researchers every year
Annual turnover 45M Euro (2014) About 40% offshore energy (likely less in 2015 due to the offshore market) -
Perth - 2014
Outline NGI Worldwide Market areas and Organization NGI Teams NGI Capabilities
CEO
subsidiaries
Lars Andresen
NGI Perth Andrew Deeks
joint venture
NGI Houston
NGI – G & P
Victor Taboada
Chang Shin Gue
Offshore Energy
Environmental engineering
Natural Hazards
Karl Henrik Mokkelbost
Anne Kibsgaard
Anders Solheim
Offshore Geotechnics
Environmental group in Trondheim
Geosurveys
Thomas Langford
Petroleum geomechanics and geophysics Lars Grande
Instrumentation and monitoring Dag Tollefsrud
Computational Geomechanics Karin Noren Cosgriff
Laboratory and model testing Morten Sjursen
Marianne Kvenaas
Andreas Pfaffhuber
Building construction and transportation Guro Grøneng
Engineering geology and rock mechanics Elin Morgan
Contaminants and land use
Soil slides and Georisk
Paul Cappelen
TBA
Geotechnics and natural hazards Trondheim
Water and resources
Avalanches and rock slides
Field investigations
Arne Pettersen
Ulrik Domaas
Kristoffer Kåsin
Vidar Gjeldsvik
Onshore foundations Magnus Romoen
5
NGI Teams NGI Worldwide NGI Organization and markets NGI Teams NGI Capabilities
NGI Houston
Amir Rahim
Victor Taboada
Francisco Martinez
Alireza Mirdamadi
Vishal Dantal
Young Jae Choi
Knut Schrøder
Egil Solhjell
NGI Oslo - Offshore Geotechnics
Thomas Langford
Tore Kvalstad
Stein Strandvik
Knut Andersen
Siren Knudsen
Rasmus Klinkvort
Maarten Vanneste
Tom Lunne
Vaughan Meyer
Hans Jørgen Pederstad
Shaoli Yang
Fritz Nowacki
Per Magne Aas
Carl Fredrik Forsberg
Øyvind Blaker
Knut Schjetne
Yunsup Shin
Victor Smith
Birger Hansen
Pasquale Carotenuto
Roselyn Carroll
Søren Holm
Youhu Zhang
Marit Støvne
Santiago Quinteros
Knut Schrøder
Brian Carlton
NGI Oslo - Computational Geomechanics
Kristoffer Skau
Khoa Huang
Ana Page
Jörgen Johanssen
Kursat Engin
Accel. (g)
0.2
Petter Fornes
Kjell Karlsrud
Karin NorenCosgriff
Aleksander Worren
0
10
20 30 Time (sec.)
0
10
20 30 Time (sec.)
40
0.4 0.2 0 -0.2 -0.4 40
Fig. A.6 – Schematic representation of wave transmission by the pile foundation – the figure displays the input bedrock acceleration and the calculated pile-cap acceleration
Christian Madshus
Finn Løvholt
Hendrik Sturm
Hans Peter Justad
Sirikarn Narongsirikul
50
layered ground Accel. (g)
Amir Kaynia
0.1 0 -0.1 -0.2
50
NGI Oslo - Instrumentation and monitoring
Anne
Stephan
Ole Espen
Yme
Signal and image processing (sonar)
Mechanical engineering
Automation engineering
Technical physics, Instrument Electrical engineering maker
Bent Frode
Klaus
Lloyd
Per
Mechanical engineering
Technical physics, Electronics
Engineering geology
Physical electronics, Geotechnics and fiberoptics environmental
Dag
Ralph
Ivar Kristian
James
Mechatronic
Cybernetics, Software engineering
Cybernetics, Software engineering
Geotechnics, Geohazards
Gudmund
Heidi
Axel
Electronics assembly
Mechanical engineering
Per
Erik
Subsea technology, Geotechnics
Software, Electrical engineering
Jan
Herdis
Inge
Instrument maker
Central IT systems engineer
Software engineering
Audun
NGI Perth
Andrew Deeks
Antonio Borges Rodriguez
Noel Boylan
Arjen Kort
Øyvind Torgersrud
Shell Australia (Shell.com.au)
Alexandre Bandini-Maeder
Sarah Elkhatib
Outline NGI Worldwide NGI Organization and markets NGI Teams NGI Capabilities
NGI Capabilities – core expertise • • •
Internationally recognized expertise Customers on a worldwide basis Research programs on a worldwide basis
Material properties - from seabed to reservoir Geohazard and risk assessments Numerical modeling and design Instrumentation and monitoring Fit-for-purpose geotechnical analysis & solutions for all types of offshore installations (platforms, subsea structures, pipelines, anchors etc)
NGI – suction anchors History – starting in the 80s
NGI – suction anchors - history Calculated
Gullfaks C: 22 m concrete skirts (penetration test 1985) (platform installed 1989)
Measured
The tests provided results that could be compared to analytical predictions => suction anchors are a viable foundation for tension‐leg platforms in soft clay.
Snorre TLP: Concrete skirted anchors (installed 1992)
Lysaker : model testing 1989-1990 (near Oslo)
NGI – suction anchors - history
80’s
90’s
Fixed platforms => Floaters and subsea structures
NGI – suction anchors – history N’kossa 1995
Visund 1997
Curlew 1997
P-18 1998
NGI – suction anchors – history
Njord 1997
Ormen Lange 2007
Marlin 1997
Huntington 2013
Diana 2000
NGI – suction anchors - history
? (2016)
NGI - Foundation for subsea structures
Petrobras Marlim Field FMC Heavy Oil/Water Separation Manifold
North Sea, GOM and West Africa skirted foundations
Deep skirt to minimize settlement
NGI – Pipelines & Risers
V H
v w σ'v
H/Dsu
V
z/D
1
K0σ'h
SOFTENING 0.95 0.90 0.84 0.79 0.73 0.68 0.63 0.57 0.52 0.47 0.41 0.36 0.30 0.25
0
H/V
V
T
Pipe Weight
H -2
Wang
-1
0 x/D
1
V
2
w
In-situ
H
-1
-2
su,insitu
V/Dsu
T
u
εuu ~ αΔT
‘bottom roughness’ for VIV analysis
~su,rem Installation
su,insitu su,cyc su,rem Stability
su,insitu su,cyc du/dt su,rem dv/dt Buckling
NGI – selected Aker projects Shenzi - PLET suction piles Shenzi - manifolds suction piles Thunder Hawk - Driven piles Blind Faith - Suction piles installation Numerous projects, in particular in the Norwegian Sector: Anchors, earthquake analyses, (re-evaluation of) pile capacities, foundation design review, jack-ups, foundation stiffness...
NGI – Suction anchors
15 (9.5 m) 14 (9.5 m) 13 (12.5 m) 12 (12.5 m) 11 (12.5 m)
Northeast 65° Cluster 1 (12.5 m) 2 (12.5 m) 3 (9.5 m) 4 (14.5 m) 5 (14.5 m)
N
Northwest Cluster FPSO
120°
120° Values in brackets show design skirt length
6 (14.5 m) 7 (14.5 m) 8 (14.5 m) 9 (14.5 m) 10 (14.5 m)
South Cluster
NGI is the market leader in suction anchor design: Efficient and accurate design with specialist tools developed by NGI Full support from SI to design and installation Re-appraisal of existing installations for new design conditions Worldwide history of successful projects and satisfied clients
NGI – Offshore piled foundations
Offshore piles for jackets: Full geotechnical design (i.e. concept, FEED and detailed design) 3D FEA modelling of piles and pile groups (to capture foundation performance) Reliability-based design => improve understanding of risk
NGI - Jack-up penetration
Hull
Legs
Spudcans
Specialist competence: • NGI/COFS developed SPLAT penetration tool (including ISO/SNAME/INSAFE methods and additional multi-layer models) • Enhanced prediction for Offshore Wind Turbine installation projects (based on progressive update of penetration database) • Large Deformation FE analyses (with ABAQUS CEL to understand response of model testing in multi-layered systems)
NGI – Advanced laboratory testing
High quality and high capacity: Triaxial testing (CAU & Ko) Direct simple shear (DSS) Oedometer (IL and CRS) Cyclic testing (DSS & Triaxial) Resonant column Ring shear Schmertmann Research Lab
[email protected]
@infoNGI
NORWEGIAN GEOTECHNICAL INSTITUTE NGI.NO
