3. SPT Offshore – Independent Contractor
• Founded in 1997 by VolkerWessels and N-Sea (former Noordhoek diving)
• More then 450 suction piles (pipelay startup-, mooring- & foundation piles) installed
in both oil and gas sector as in renewable sector
• Since June 2016 SPT Offshore is an independent EPCI contractor, specialized in
suction pile foundations and anchors
4. How Do Suction Piles Work?
Suction Pile Installation
• Lower suction pile to seabed
• Self-weight penetration
• Discharge of water, causes difference in water
pressure inside and outside
• Driving force on the top-plate
(10 tonne / m2 / bar)
• Pump can be removed after installation
• Animation
discharge
of water
5. Why Suction Piles? – Compared to Monopiles
• Noise-free installation;
• No risk of offshore installation operation being shut down
• Saving costs on noise mitigation spread
• Environmental friendly
• BSH compliant
• Swift to install; only few hours compared to many hours of pile driving, reducing
critical vessel time
• Easy to install; no hammer and pile handling spread required, only little offshore
handling required, reducing costs and risks
• Foundations are easy to level by proportional control of the suction pumps; saving
costs of levelling spread and separate TP lift
• Easy to fully decommission by reversing the suction process; environmental friendly
and cost efficient solution
6. Suction Pile Suitability
Site investigation
• Site survey
• CPT
• Borehole
• Laboratory tests
Suction pile suitability
• Water depth <10m
• Hard ground/rock
• Steep seabed
Soil data interpretation
• Seabed morphology
• Stratigraphy
• Design parameters
• Deep water
• Clay or sand
• Flat seabed
not suitable at all . . . . . . very well suitable
n/a conditional feasible good
• Gravel • Layered soils
7. Suction Pile EPCI Contractor - Engineering
• E – Engineering
• Concept studies and (pre)FEEDs
• Detailed design of suction pile anchors
• Detailed design of substructures and structural design of topsides
• Research and development
V
M
H
8. Procurement and Construction
• PC – Procurement and Construction
• Suction piles and substructures up to 2,500mT at VSF, The Netherlands
• Well-established network of pre-qualified fabrication yards, ranging from
Brasil, to Dubai, to Malaysia and Vietnam
9. (Transportation and) Installation
• I – Installation (including transportation)
• Single piles and foundations from Company’s vessels; SPT Offshore owns a pool
of 20+ suction pump spreads for the installation of single suction piles and
suction pile foundations
• SIPs and other suction founded platforms and structures using chartered
barges and/or vessels
• Complete mooring line installation with OCVs and AHTs
10. Market Leader and Customers
• 20 years experience in suction pile technology
• Worldwide no. 1 in suction pile foundations and anchors (>400 installed)
• Specialist covering whole range from design, fabrication and installation
