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DAY 1 TECHNICAL PROGRAMME
Aegir’s first project
Meredith Taylor, Heerema Marine Contractors
WHY INVEST INTO A NEW VESSEL?
•
•
•
Heerema is a key
player in complex
deepwater
construction for over
10 years
Maintain and expand
position in expected
growth of market in
complex high-tech
field developments
Heerema’s Objectives:

-
heavy pipelay
heavy lifting
heavy reeling
Heavy pipelay to 2000 mT top tension and 3500 mwd
Heavy lifting to 4000 mT capacity
Heavy reeling to 800 mT top tension + lifted reels
Use pipelay A&R system for deepwater lowering

Back-to-back compatible with DCV Balder

Worldwide operations
- Fast transit speed - Monohull
- Good workability in long swells
Choice for a mix of
high-end capabilities
–
–
–
Multi-purpose Deepwater Construction Vessel

Based on existing vessel design
3
TYPICAL DEEPWATER FIELD DEVELOPMENT
Drilling Center 2
Subsea
Structure
Floating
Production
Facility
Drilling Center 3
Steel Catenary
Riser
Flowline
Gas Export Line
Well
Oil Export Line
Mooring Line
Anchor Pile
Flowline
Jumper
Drilling Center 1
4
LIFTED REELS CONCEPT
2 reels + 1 reel drive unit
on vessel
empty reel
in transit
1 reel + 1 reel drive unit
at quay
Pipe
production
ramp
Tie-in
station
Pipe stalks, length suited
to continuous operation
full reel
in transit
OUTLINE DESIGN VESSEL
1.
2.
3.
full reel
3000T
25m
10m
empty reel
750T
Existing concept
Reels close to crane
Tower & moonpool close to crane & distant from reels
full reel
3000T
6
OUTLINE DESIGN VESSEL
1.
2.
3.
4.
Existing concept
Reels close to crane
Tower & moonpool close to crane & distant from reels
Move crane, tower & moonpool off-center
empty reel
750T
full reel
3000T
full reel
3000T
7
OUTLINE DESIGN VESSEL
1.
2.
3.
4.
5.
empty reel
750T
Existing concept
Reels close to crane
Tower & moonpool close to crane & distant from reels
Move crane, tower & moonpool off-center
Lengthen ship
50m
full reel
3000T
full reel
3000T
8
AEGIR - MAIN EQUIPMENT
4000 mt
mast crane
2000 mt
RJ-lay tower
Length o.a.:
Width:
46.2 m
Depth:
16.1 m
Draft (working):
Draft (transit):
Installed power:
3000 mt
lifted reels
Dynamic positioning:
800 mt
tensioners
1500 mt
DWL system
211.5 m
9 – 11 m
8m
48 MW
DP3
Transit speed
12 knots
Accommodation:
289 POB
9
100
80
60
40
20
0
30
60
4000
Lifting capacity [mT]
120
Lifting height [m]
AEGIR – 4000 MT MAST CRANE
3000
2000
1000
90
radius [m]
Double block
(splitable)
10
AEGIR – DEEPWATER LOWERING SYSTEM (1500MT)
1 fall
500T dynamic
375T static
2 falls
1000T dynamic
750T static
4 falls
2000T dynamic
1500T static
-3500m
-7000m
-7000m
11
AEGIR’S FIRST PROJECT - LUCIUS
•
•
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•
Scope
Project vs Aegir Timeline
Reeling
Reel Transfer
Friction Testing
Riser Pull-in
Deepwater Lowering
Moonpool
12
SCOPE
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•
•
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•
Aegir
4 8” flowlines
3 6” flowlines
6 8” SCR’s
1 140mT Manifold
Crossing mattress
• Balder
• Thialf
Suction Piles, SPAR Mooring, Manifold
Topsides
13
PROJECT VS AEGIR TIMELINE
14
LIFTED REELS CONCEPT
Dampened tuggers control
the pendulum motions
15
REEL TRANSFER
• 4 reels, max weight mT - pipe 1646, total 2754
Reel transfer seastates
•
Reel No
Pipe
Weight
Total
Weight
Transfer
Sea state
-
[mT]
[mT]
Hs [m]
Tp[s]
1
1475
2325
1.4
5.5
2
1625
2733
0.55
5.1
3
243
1351
0.7
5.6
4
1646
2754
0.95
4.9
16
REELING KNOWLEDGE DEVELOPMENT
Max. compression strain location
17
FRICTION TESTING
• Reliability based
18
REEL INITIATION
19
RISER BASE PILE PLET
20
RISER PULL-IN DESIGN
• SCR Pull Tube
21
RISER PULL IN SPAR
22
DEEPWATER LOWERING
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•
•
•
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•
DWL system
Lowered Manifold
140 mT to 6820’
Subsea Transfer
from crane –
45m synthetic sling
23
MOONPOOL
•
•
•
•
PLET’s installed through moonpool
CFD analysis used to model hydrodynamic loads
Radar wave measurement system in moonpool
Steering winches added as a result of analysis
24
QUESTIONS
25