Post on 21-Jan-2016
description
DOT presentation03 Oct 2008
Perdido Installation program- Transport & Installation -
Perdido Project
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AGENDA
IntroductionPerdido field specificsResourcesProgram / scheduleExecution
- Mooring pile installation- Flowline installation- Hull transportation & Installation- SCR installation.
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Perdido Subsea Project overview
Perdido site
Alaminos Canyon, block 857
Company / Operator: Shell Exploration & ProductionPartners: BP/ Chevron
Location:Alaminos Canyon block 857Water depth: ~7,850 - 9,800 feet Truss Spar Subsea development
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Far away offshore
Corpus Christi – 150 milesGalveston – 180 miles
Approx. 1.5 - 2 hours by helicopterNearest platform – 80 miles
Perdido site
Alaminos Canyon, block 857
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Perdido field detailsWater Depths:
• N mooring cluster 2,460 m
• DVA site 2,380 m
• Tobago 2,950 m ! RECORD
• SE mooring cluster 2,630 m ! RECORD
• SW mooring cluster 2,330 m
DVA = Direct Vertical Access
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Perdido Records
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SPAR waterdepth development
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• Mooring piles• SPAR• Topsides• Production Flowlines• Water Injection system• Export Steel Catenary Risers• Manifold piles & manifolds• Electrical SubmersiblePump (ESP) caissons &inlet assemblies
Heerema Scope
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The offshore program
Jun Jul Aug Sep Oct
2008
1 Perdido Mooring piles
2 Perdido Flowlines
3 Perdido HOST hook-on
4 Perdido SCR’s
5 Perdido topsides (2009)
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The resources
DCV Balder
SSCV Thialf
Support vessel Union Manta
Transport Barges etc.
400 ft.
300 ft.
250 ft.
Spar tugs
Fixed ballast
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The people
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Geneva
Delft, Zwijndrecht, Vlissingen, Leiden.
Houston
Lagos
Perth
Heerema Group Worldwide
Hartepool, Surrey
Mexico City, Villahermosa
Luanda
Heerema Group - worldwide
Bangalore
• subsea
• Moorings / hull• subsea
analysis support
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Balder Work Area split
• Dedicated pipelay
• Storage
• Material handling
• Dedicated mooring
Accommodation for 350 persons
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Upgrades for the deep
Greater waterdepth than before. Equipment upgrades required:A&R wire 4,000 m, 5.5 inch diameterL&P wire 4,000 m, 4.5 inch diameterCrane wires 2 * 19km, tuned constructionPositioning equipment more sensitive equipmentROV frame & winch capacity.
Type 8023Type 8023More DirectionalMore Directional
beam shape beam shape below transceiver facebelow transceiver face
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9 leg taut mooring system in three clusters
Perdido Regional Host Installation- Spar mooring configuration
Lines 1, 2, 4, 5, 7 & 8 Lines 3, 6 & 9
Platform chain:Max. 345m of 135mm studless chainPolyester rope: 229mm diameter1830m + 1830m + 37m insertGround chain:54m of 135mm studless chain
Platform chain:Max. 345m of 135mm studless chainPolyester rope: 229mm diameter1220m + 1220m + 137m insertGround chain:67m of 135mm studless chain
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The 9 piles are transported on 2 barges each 260ft long
Phase 1 - Pile installation
Mooring Pile components:Suction piles: 5.5m dia. – 31m long, 250 tons
Pile shackle Between pile and pile chainPile chain: 75’ of 5.3” (134mm) studless chainMooring connector: BSW Ballgrab female connector + shackle
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Transfer from barge to Balder deck
Phase 1 - Pile installation
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Pile and mooring component assembly on Balder deck
Phase 1 - Pile installation
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Phase 1 - Pile installationUpend pile above deck using two cranes
Slew overboard and lower
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Phase 1 - Pile installation
Lower pile to seabedPositionApply suction with pump mounted on ROV
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Phase 2 - Flowline phase work
Production flowlines2 no.’s 8.625” OD * 18.1 mm 3 no.’s 10.75” OD * 22.2 mmcoated with Glass sphere polyurethane (GSPU)
Water Injection flowline1 no.’s 10.75” OD * 22.2 mmOutside & inside coated with fusion bonded epoxy (FBE)
All with Pipeline end terminations (PLET’s) on both ends
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PLET transfer
Phase 2 - Flowline phase work
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Start-up PLET upending
Phase 2 - Flowline phase work
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Phase 2 - Flowline phase work
Pipe layOn deck: 2 double Joints + 1 collar Joint = 1 Hex Joint
Hex Joints in tower
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End PLET in tower
Phase 2 - Flowline phase work
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Phase 3a - Mooring line pre-deployment
The mooring components are transported on 2 barges, 300ft & 400ft long
3 Mooring line pre-deployed :Hurricane contingencyDecrease of critical spar exposure timeLearning curve for assembling components
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Phase 3a - Mooring line pre-deployment
The mooring components are transferred to Balder deck for assembly
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The polyester ropes are spooled from their transport reel on to Balder’s Mooring Line Deployment Winch
Phase 3a - Mooring line pre-deployment
Assemble mooring components on Balder deck
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Phase 3a - Mooring line pre-deployment
Connect ground chain to bottom polyester Overboard connection
Hang-off bottom polyester rope Spool on next polyester rope
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Phase 3a - Mooring line pre-deployment
Assemble mooring components on Balder deck
Connect bottom polyester rope with top rope…
Overboard connection and spool off top polyester rope
Connect & overboard buoy
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Inshore tow-out route
Phase 3b - Wet tow & Spar upending
Perdido site
Alaminos Canyon, block 857
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Phase 3b - Wet tow & Spar upending
Connect ballast hoses to spar
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Phase 3b - Wet tow & Spar upending
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Prepare Layout top of Spar
Install pull-in equipment
Make safe
Phase 3c - Mooring line hook-up
3535
Hand over polyester to tug to keep polyester off seabedSpool off top segment of poly rope
Phase 3c - Mooring line hook-up
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Install and deploy platform and messenger chainTug holds Poly wire from seabed
Phase 3c - Mooring line hook-up
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Lower chain clamp to transfer the load to the sparDisconnect using ROV
Phase 3c - Mooring line hook-up
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Slurry suspension to be pumped to soft tank
Phase 3d - Fixed ballast installation
Fixed ballast material: magnetite (iron ore), 13,533 mtontransported with hopper barge Peggy Palmer and push boat Naida Ramil, moored along Balder
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Install piping on Balder deckInstall ballast boom
Phase 3d - Fixed ballast installation
Install piping on spar deck
Connect piping to the soft tank filling points on top of spar
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Mix magnetite with seawater using front loaders and water from BalderPump slurry into spar
Phase 3d - Fixed ballast installation
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Haul in 3 * 750’
(440 links)
Step 2
Pay out 2 * 750’(440 links)
Cluster 1 tension at stoppers ~1260 kips
Further increase tension of line 1 (~1860 kips). This will be above stall capacity (=1600 kips)
Step 1
Phase 3e – Mooring line stretching
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Phase 4 SCR installation
Pick-up pre-laid pipe
Install final VIV strakes
flex joint welded
1 no.’s of 10.75” OD * 22.2 mm WT Water Injection SCR (ID coated)2 no.’s of 16” OD * 25.4 mm WT export SCR
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Transfer headFlexjoint
3½″ SCR pull-in wire pre-installed on spar.
Socket
Phase 4 SCR installation
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Phase 4 SCR installation
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QUESTIONS ?