Dredging for Oil and Gas · 12/3/2013 · Dredging for Oil and Gas CEDA UK Seminar Dredging for...
Transcript of Dredging for Oil and Gas · 12/3/2013 · Dredging for Oil and Gas CEDA UK Seminar Dredging for...
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Dredging for Oil and Gas CEDA UK Seminar Dredging for the Offshore Industries ICE London, 3 December 2013
Offshore and EPC Contractors
Paul Hesk Regional Manager – Middle East, India and Africa Van Oord Offshore bv
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Recent Investments
Company Profile
Leading international contractor, specialising in:
• Dredging and Reclamation
• Offshore Oil and Gas
• Marine Engineering
• Offshore Wind Farms
• Infrastructure
• Soil Improvement
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Oil and Gas Sector Related Activities
• Dredging and Reclamation
• Trenching and Backfilling
• Pipeline (and Cable) Installation
• SPM System Installation
• Subsea Rock Installation
• Protection and Stabilisation of Pipelines, Cables and Structures
• Ballasting of Structures
• Scour Protection
• GBS Installation
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© Copyright Van Oord | 2012 4
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In presentation-modus:
Dredging and Reclamation
Das Island, United Arab Emirates
• New platform for airport extension and accommodation
• 160 km offshore
• 16 million m3 sand (including soil improvement by vibro-compaction)
• 7 km of revetment
• 3.5 million tonnes Rock
• 140,000m3 Concrete
• 39,000 No. X-blocks
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In presentation-modus:
Trenching and Backfilling
Typical Equipment Types:
• Trailing Suction Hopper Dredgers
• Cutter Suction Dredgers
• Backhoe Dredgers
Selection Criteria:
• Soil Properties
• Water Depth
• Disposal Area
• Environmental Considerations
Shallow to Deep Water
Near Shore
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Pipeline Installation
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On-bottom Pull The pipeline is pulled from an onshore stringing yard into the water with the aid of Linear Pulling Winches mounted on an offshore construction barge.
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Pipeline Installation – Bottom pull
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Pipe Lay In the near shore area, the pipeline is pulled from a Shallow Water Lay Barge moored offshore to the shore with the aid of Linear Pulling Winches.
In deeper water, the pipeline is installed on the seabed by a Shallow Water Pipe Lay Barge.
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In presentation-modus:
Shallow Water Pipe Lay Barge
• Shallow water applications (up to 100m)
• 6” to 60” diameter pipe
• 7 Stations:
• 3 Welding
• 1 Non Destructive Testing
• 3 Field Joint Coating
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In presentation-modus:
Single Point Mooring (SPM) System Installation
• Pipe Line End Manifold (PLEM) Installation
• CALM Buoy Installation:
• Subsea and Floating Hoses (including Umbilicals)
• Anchor and Chains
• Mooring Hawser
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Subsea Rock Installation
• Stabilisation
• Free-span Support
• Pre-lay
• Post-Lay
• Crossings
• Upheaval Buckling Mitigation
• Protection
• Anchors
• Dropped Objects
• Spudcan Pugmark Filling
• GBS Related Applications
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From the Archive……..
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Flexible Fall Pipe Vessels
• DP-2
• Highly accurate installation
• Large capacity (up to 28,000 tonnes)
• Installation in water depths of up to 1,200m
• Ability to work close to live structures
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Side Stone Dumping Vessels
• DP-2
• Accurate installation in water depths of up to 50m
• Ability to work close to……
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Side Stone Dumping Vessels
…… or under live structures
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Pipeline Stabilisation
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Trench Backfilling
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Thermal Insulation
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Free-span Correction
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Pre and Post Lay Installation
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Crossings
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Upheaval Buckling Mitigation
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Anchor Protection
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Dropped Objects
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Infill of Spudcan Pugmarks
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Gravity Based Structure (GBS) installations
• Sea Bed Preparation
• Tow Out
• Sinking
• Ballasting
• Scour Protection
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Seabed Preparation
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Tow-Out and Sinking
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Ballasting
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Scour Protection
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Chapter title
Thank you for your attention
Are there any questions?
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