Dredging for Oil and Gas Recent Investments

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09/12/2013

Paul Hesk

Regional Manager – Middle East, India and Africa

Van Oord Offshore bv

Dredging for Oil and Gas

CEDA UK Seminar Dredging for the Offshore Industries ICE London, 3 December 2013

Offshore and EPC Contractors

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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

Offshore and EPC Contractors

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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

Offshore and EPC Contractors

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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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Trenching and Backfilling

Typical Equipment Types:

• Trailing Suction Hopper Dredgers

• Cutter Suction Dredgers

• Backhoe Dredgers

Selection Criteria: Shallow to Deep Water

• Soil Properties • Water Depth

• Disposal Area

• Environmental Considerations

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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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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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

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Offshore and EPC Contractors