5 heerema float-over product...
TRANSCRIPT
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Float-over presentation
December 2002
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OFFSHORE TRANSPORT
& INSTALLATION
ONSHORE &OFFSHORE
STEELCONSTRUCTION
OFFSHOREHEAVY
TRANSPORT
FIELD DEVELOPMENTCONCEPTUAL &
DETAILED ENGINEERING
Heerema Group Divisions
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Heerema Marine ContractorsProduct range
Deepwater Construction
Removal
Float-over
Facility installation
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Heerema Marine ContractorsProduct range
Deepwater Construction
Removal
Float-over
Facility installation
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Contents
IntroductionMethod statement overviewRelationship between componentsFloat-over componentsConclusions
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Float over product group
Since 2001Jan Groot – Frank LangeObjective is to establish Float-over as a Heerema Product GroupTendering various prospectsProduct development ; Forklift
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Executed float-overs in open seas
Aker Maritime (N)5,000Lan Tay/ Lan Do2002
Technip/Saipem17,000Cakerawala2002
B&R/Heerema11,500Malampaya2001
B&R6,000Wandoo1997
ETPM4,000EPKI1997
Saipem6,000M11996
Saipem7,500M31996
ETPM/Technip9,500Cobo Pambi1996
ContractorTopsides weight (T)ProjectYear
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Future Float-overs
HHI/Noble Denton9,000Bunga Raya2003
Saibos/Technip12,000Amenan2003
Aker Maritime (N)/ Clough14,000Bayu-Undan2003
Aker Maritime (N)/ Clough10,000Bayu-Undan2003
Saipem8,000Helang/Layang2002
ContractorTopsides weight
(T)ProjectYear
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Upcoming Float-overs
HHI/Noble Denton9,000Bunga Raya2003
Saibos/Technip12,000Amenan2003
Aker Maritime (N)/ Clough14,000Bayu-Undan2003
Aker Maritime (N)/ Clough10,000Bayu-Undan2003
Saipem8,000Helang/Layang2002
ContractorTopsides weight (T)ProjectYear
Dockwise
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Forklift development
Started off with ExxonMobil HawkesTwo phasesPhase 1 finishedWorking on phase 2Learned about catamaran
No Market at present
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Forklift
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Contents
IntroductionTender ActivitiesMethod statement overviewRelationship between componentsFloat-over componentsConclusions
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Contents
IntroductionMethod statement overviewRelationship between componentsFloat-over componentsConclusions
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Method statement overview
5 phases in float-over sequence– Stand off– Docking– Mating– Vertical load transfer– Un-docking
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Stand off position
Barge moored with anchorsDocking lines
Tug 1Tug 2
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Docking
Cow horns for entry
Fendering for tight fit
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Mating (1)
Mating lines forprecise positioningLoad transfer by
Ballasting and Leg Mating Units
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Mating
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Vertical load transfer
Load transfer on jacket
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Undocking
Undocking with tugsand docking lines
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Contents
IntroductionMethod statement overviewRelationship between componentsFloat-over componentsConclusions
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Relationship between components
Platform and equipment
Float-over concept Environment
- Jacket + foundation
- Deck
- Transportation barge
- Swell- Workability- Safety
- Docking - Mating - Vertical load transfer - Fendering- Ballasting
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Relationship between components
Platform and equipment
Float-over concept Environment
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Barges for decks > 10,000 mT
H-541 42 mS45 42 mBlack Marlin 42 mMighty Servant 3 40 m
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400’ Piggy Back on Dockwise
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Relationship between components
Platform and equipment
Float-over concept Environment
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Environmental issues
Workability is governed by Seastate HeaveWeather outlook (i.e. window length)
Accepting lower workability reduces design forces
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Relationship between components
Platform and equipment
Float-over concept Environment
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Contents
IntroductionMethod statement overviewRelationship between componentsFloat-over componentsConclusions
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5 Float-over components
Docking systemMatingFenderingVertical Load transferBallasting
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Docking
2 systems used on Malampaya
TugsAnchors/docking lines
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2 Docking systems
Docking System
Towing tug
Docking lines
Assisting tug
Docking tug
Anchor lines
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Anchor/Docking lines
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Mating lines
precise positioning of the deck cones above the jacket guidesStiffness of system versus workabilty8 lines used on Malampaya, 4 proposed in future
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Malampaya mating stretchers
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Malampaya Fendering
Loose fitTight fit
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Vertical Load transfer
Hi-deck method – Leg Mating UnitsUni-deck method - Hydraulics
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Leg Mating Units
Mating Cone
Rubber
Receptor
Sand
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Ballasting
Malampaya 20,000 m3/hr SubcontractedDockwise vessels 12,000 m3/hr internal
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Conclusions
Float-over is complicated, but feasibleRelationship between components require T&I contractor input in FEED studyFew vessels available for topsides > 10,000 mT
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More information
www.heerema.com/marine/float-over
Jan Groot tel + 31 71 5799466 Product Manager