Offshore Dredging+Boskails.pdf

8/11/2019 Offshore Dredging+Boskails.pdf

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DREDGING - for OIL and GAS activities in Canada

Dredging is an excavation activity or operation usually carried out atleast partly underwater, in shallow seas or fresh water areas with the

purpose of gathering up bottom sediments and disposing of them at adifferent location.

In Holland dredging and land reclamation has been ongoing forcenturies, ever since the Frieslanders first settled there.

GOD CREATED THE WORLDBUT THE

DUTCH CONSTRUCTED HOLLAND

John M. WaringSNAME Presentation Calgary 2010


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DREDGING - for OIL and GAS activities in Canada Dredger categories

Construction of sacrificial beach islands and sub-sea berms

Channel and harbour dredging

Land reclamation and coastal protection

Tailings transfer, MFT reclamation & mud farming (Oil Sands)

Excavation of glory holes

Trenching for pipelines

Pipe and cable laying and intervention

Placement of protection/pipeline intervention

Platform and wellhead intervention

Land falls and shore approaches

Environmental clean up and disposal

Decommissioning

Innovation, Engineering and Development

Equipment past present and future John M. WaringSNAME Presentation Calgary 2010


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DREDGING - CATEGORIES MECHANICAL

BUCKET DREDGERS CLAMSHELL DREDGERS BACK HOE DREDGERS

HYDRAULIC CUTTER SUCTION DREDGERS SUCTION DREDGERS TRAILING SUCTION HOPPER DREDGERS

SPECIALTY EQUIPMENT FALL PIPE VESSELS ROCK PLACEMENT EQUIPMENT DEEP WATER GRAB SYSTEMS



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DREDGING - for OIL and GAS activities in Canada Construction of sacrificial beach (artificial) islands



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Construction of sacrificial beach (artificial) islands


Construction by pump ashore suction dredge andbow discharge from trailer suction hopper dredgers


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Construction of artificial islands Trailer Suction Hopper Dredge


Stage 1 bottom dumping

Stage 2 - rainbowing

Stage 3 pump ashore


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DREDGING - for OIL and GAS activities in Canada Construction of sub-sea berms for caisson deployment



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DREDGING - for OIL and GAS activities in Canada Channel and Harbour Dredging



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DREDGING - for OIL and GAS activities in Canada Rainbowing



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DREDGING - for OIL and GAS activities in Canada Land Reclamation



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DREDGING - for OIL and GAS activities in Canada Reclamation



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DREDGING - for OIL and GAS activities in Canada Coastal protection design and installation



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DREDGING - for OIL and GAS activities in Canada Tailings transfer, MFT reclamation & mud farming (Oil Sands)



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DREDGING - for OIL and GAS activities in Canada Tailings transfer, MFT reclamation & mud farming (Oil Sands)



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DREDGING - for OIL and GAS activities in Canada Excavation of Glory Holes


Glory hole dredging has been achieved using trailer suction hopper dredgerswith extended suction pipes and mechanical Grab Excavating Systems


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DREDGING -for OIL and GAS activities in Canada Excavation of Glory Holes



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DREDGING - for OIL and GAS activities in Canada Trenching for Pipelines


Modern plough design

Conventional excavation with a draghead


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DREDGING - for OIL and GAS activities in Canada Pipe and Cable laying



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DREDGING - for OIL and GAS activities in Canada Placement of protection



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DREDGING - for OIL and GAS activities in Canada Placement of protection



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DREDGING - for OIL and GAS activities in Canada Platform & Well Head intervention


Material placed mechanically Material placed with a fall pipe


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DREDGING - for OIL and GAS activities in Canada Landfalls and Shore Approaches



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DREDGING - for OIL and GAS activities in Canada Environmental cleanup and disposal

Pollution Recovery System

Designed to remove oil and chemicals from vessels lying on the sea bed in very deep water without using divers.Currently depths of 500 meters can be obtained and greater depthsdown to 4000 meters are envisaged.

Artificial island constructed to placeenvironmentally sensitive materials.

Disc cutter developed for removing

polluted materials.

Trailer suction hopper dredgewith modified suction pipearms for collecting surface oil.


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DREDGING - for OIL and GAS activities in Canada So what is new in the dredging business since our days in the Canadian Beaufort?

HEALTH & SAFETY PROGRAMS

QUALITY MANAGEMENT SYSTEMS

TRAINING

ENVIRONMENTAL MANAGEMENT SYSTEMS

INNOVATION, RESEARCH & DEVELOPMENT

FLEET REPLACEMENT PROGRAMS
http://www.geovisie.nl/gallery/Bjorvika-tunnel-Oslo-Norway/Scradewayhttp://www.geovisie.nl/gallery/Bjorvika-tunnel-Oslo-Norway/Scradeway


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DREDGING - GOING DEEPERInnovation, Engineering & Development

Concept designs are currently being engineered to excavate materialand place protection at depths of more than 250 meters below sea level


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DREDGING EXCAVATING HARDER MATERIALS

Pipeline trenching is now possible inseabed soils with UCS values up to 30MPa in harsh metocean conditions andenvironmentally sensitive areas.Hard soil is normally dredged by meansof a Cutter Suction Dredger.

Special drag heads (ripper drag heads)are developed for large Trailing SuctionHopper Dredgers for the dredging ofharder soil.

Innovation, Engineering &Development


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DREDGING - EQUIPMENT PAST

DArtagan 28200 kw

J.F.J DeNul 27240 kw

Cristobal Colon 46000 M3

Leif Eriksson 46000 M3Ham 318 37293 M3

Cornelius Zanen 8000 M3 W. D. Gateway 6000 M3

Beaver MackenzieGeopotes X 10000 M3


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DREDGING EQUIPMENT PRESENT

DArtagan 28200 kw





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DREDGING - FLEET REPLACEMENT PROGRAMS

Willem van Oranje

Gateway

A new generation


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DREDGING - Innovation, Engineering and Development

Dynamically Positioned Fallpipe Vessel (DPFV)Carrying capacity 24,000 ton

Under Construction


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Side stone dumping

Cable layingDiving SupportSalvageHeavy lift & transport Pipeline shore approach construction (pipe-pull)

Multi-purpose vessels for

offshore project support


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Development of remote controlledsub-sea excavating equipment


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DREDGING - Innovation, Engineering and Development Under development special equipment for shallow water pipe laying


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John M Waring

DREDGING when SIZE MATTERSDArtagan 28200 kw




Documents

Offshore Dredging+Boskails.pdf