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A Novel Installation Method
for Deepwater Conductors
1Tuesday, April 8th
, 2014
17:00‐17:20
Marine Construction & Engineering Deepwater Developments
Madrid, Spain
TLWP, Offshore Brasil
• Field layout and target spec
• Jetted conductors – review
• Driven conductors – review 
• Installation methodology
• Obstacles and solutions
• As installed condition
• Conclusions
Overview
Tuesday, April 8th
, 2014
17:00‐17:20
Marine Construction & Engineering Deepwater Developments
Madrid, Spain
2
24 m
36 m
9% Grade
Field layout & target spec
Tuesday, April 8th
, 2014
17:00‐17:20
Marine Construction & Engineering Deepwater Developments
Madrid, Spain
3
15 @ 60 m x 914mm x 38mm WT – 60T
5 Templates
±10cm
1 deg
Horizontal
Inclination 
Tolerance
Stick‐up 
Tolerance
1182m 
Water Depth
Tuesday, April 8th
, 2014
17:00‐17:20
Marine Construction & Engineering Deepwater Developments
Madrid, Spain
4
Jetted conductors ‐ review
+ Very mature method
+ Very long conductors address capacity 
uncertainty
– Reduced soil cohesion
– Reconsolidation time varies
– Susceptible to shallow flow (Ursa)
– Long rig‐time hold – costly
– Settles if hold period is too short
– Imprecise AS‐BUILT well coordinates
ADVANTAGES / CHALLENGESADVANTAGES / CHALLENGES
Tuesday, April 8th
, 2014
17:00‐17:20
Marine Construction & Engineering Deepwater Developments
Madrid, Spain
5
Driven conductors ‐ review
+ Mature driving technology (pre‐1900)
+ Batch‐set cost benefits
+ Affordable installation vessels
+ Precise control of final position
+ Short installation time
+ Use shorter conductor for same soils
– Experienced installers are few
– Specialized equipment (Hammer, STS, 
shuttle system)
ADVANTAGES / CHALLENGESADVANTAGES / CHALLENGES
Tuesday, April 8th
, 2014
17:00‐17:20
Marine Construction & Engineering Deepwater Developments
Madrid, Spain
6
Installation methodology
Tuesday, April 8th
, 2014
17:00‐17:20
Marine Construction & Engineering Deepwater Developments
Madrid, Spain
7
Installation methodology
Tuesday, April 8th
, 2014
17:00‐17:20
Marine Construction & Engineering Deepwater Developments
Madrid, Spain
8
Project resources
Tuesday, April 8th
, 2014
17:00‐17:20
Marine Construction & Engineering Deepwater Developments
Madrid, Spain
9
Equipment onboard
TP‐1
TP‐2
TP‐3
TP‐4
TP‐5
TP‐6
TP‐7
Working 
Zone
Acoustic Positioning SystemAcoustic Positioning System
Deepwater Subsea HammerDeepwater Subsea Hammer
• MENCK 270kJ
• Up to 3000m WD
• LBL Array
• 7 Compatts
Shuttle SystemShuttle System
STS HeadSTS Head
Tuesday, April 8th
, 2014
17:00‐17:20
Marine Construction & Engineering Deepwater Developments
Madrid, Spain
10
Installation procedure
Tripod with Compattx7
LogisticsInstallation
1.  Deploy LBL array1.  Deploy LBL array 2.  Deploy 5 templates2.  Deploy 5 templates
Tuesday, April 8th
, 2014
17:00‐17:20
Marine Construction & Engineering Deepwater Developments
Madrid, Spain
11
Installation procedure
3.  Deploy Conductor3.  Deploy Conductor
4.  Self‐weight penetration4.  Self‐weight penetration
Verticality Check
Guide Cone
5. ROV Suction Penetration5. ROV Suction Penetration
Suction at STS Head
Pressure gauge
Tuesday, April 8th
, 2014
17:00‐17:20
Marine Construction & Engineering Deepwater Developments
Madrid, Spain
12
Installation procedure
Detached STS Head
Open guide cones
6.  STS & template recovery6.  STS & template recovery
Driving complete
Land hammer
7.  Batch hammering7.  Batch hammering
Spider Tool and Compatt
8.  Final as‐laid survey8.  Final as‐laid survey
Self‐weight
• Avg: 14.4m (~26%)
• Min: 13.0m
• Max: 15.4m
Suction
• Avg: 16.3m (~29%)
• Add: +2.0m (~3.6%)
• Min: +1.5m
• Max: +2.8m
As‐installed condition
Tuesday, April 8th
, 2014
17:00‐17:20
Marine Construction & Engineering Deepwater Developments
Madrid, Spain
13
Tuesday, April 8th
, 2014
17:00‐17:20
Marine Construction & Engineering Deepwater Developments
Madrid, Spain
14
• Any subsea installation
• Immediate capacities known
• Meet strict location spec
• Precise stick‐up control
Conclusions
• Time savings
• Work begins immediately
• Off Rig critical path
• Less soil disturbance
Tuesday, April 8th
, 2014
17:00‐17:20
Marine Construction & Engineering Deepwater Developments
Madrid, Spain
15
Novel Installation Method for Deepwater Conductors
Presenting Author:
Jonathon Miller
(jonathon.miller@intermoor.com)
Co‐Authors:
Michael O’Driscoll
João Ruiz
Ariel de Silvio
www.intermoor.com
Angola     Brazil     Egypt     Malaysia     Mexico     Nigeria  Norway    Singapore     United Kingdom   United States

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A novel installation method for deepwater well conductors 2014-04-08-10 madrid - rev 8