Troika Bottom Tow Pipeline
Troika PipelinesTroika Pipelines
ADT-PPT-487
1350 ft1350 ft
BullwinkleBullwinkle PlatformPlatform
Steel CatenarySteel Catenary RisersRisers
2850 ft2850 ft
14 miles14 miles
Troika SubseaTroika Subsea FacilitiesFacilities
NN
Mid-pointMid-point Tie-inTie-in
Troika Bottom Tow Pipeline
FlowlineFlowline Buoyancy Pipe Buoyancy Pipe
24" Casing 24" Casing
18" Riser Casing 18" Riser Casing Mid-Line Tie-in Sled Mid-Line Tie-in Sled
24" Casing 24" Casing
Mid-Line Tie-in Sled Mid-Line Tie-in Sled Template Sled Template Sled
ADT-PPT-487
Troika Bottom Tow Pipeline Single Pipeline SectionSingle Pipeline Section
10.75" O.D. x 0.866" W.T. X70 Spacer
Pipeline
3" Thick Foam Insulation
Abrasion Resistant Coating 110 mils Thick Annulus :
Pressurized Nitrogen
24" O.D. x 0.375 W.T. X70 Casing Pipe
ADT-PPT-487
Troika Bottom Tow Pipeline Matagorda Fabrication SiteMatagorda Fabrication Site
ADT-PPT-487
Troika Bottom Tow Pipeline
Troika PipelinesTroika Pipelines
ADT-PPT-487
Tow RouteTow Route
Matagorda Peninsula Fabrication Site
Houston New
Orleans
Troika SubseaTroika Subsea DevelopmentDevelopment
Tow Route
GreenGreen CanyonCanyon
Troika Bottom Tow Pipeline Moving Pipeline into Surf ZoneMoving Pipeline into Surf Zone
Empty on Beach
Pipeline Filled with Water and
moved into SurfFilled with Pressurised
Nitrogen Pipeline
Dewatered and Launched
Side BoomsSide Booms Moving PipelineMoving Pipeline into Surf Zoneinto Surf Zone
ADT-PPT-487
Bundle TowBundle Tow
BullwinkleBullwinkle PlatformPlatform
TroikaTroika
Bundle Tow-inBundle Tow-in RouteRoute
1600
3100 2900
2100
ADT-PPT-487
Troika Bottom Tow Pipeline
Riser InstallationRiser Installation - 50- 50
- 120- 120 - 179- 179 - 240- 240 - 303- 303 - 370- 370 - 445- 445 - 525- 525
- 1350’- 1350’
BullwinkleBullwinkle PlatformPlatform
ADT-PPT-487
Troika Riser InstallationTroika Riser Installation
1000
500
0
210k
35k
169k
137k
20k
50k
94k
BullwinkleBullwinkle PlatformPlatform2,318,000
2,318,000
10,124,000
10,124,000
Batter Line
Batter LineV34 V35 V36 V36
V36
V30 V31 V32 V33
ADT-PPT-487
Troika Bottom Tow Pipeline Characteristics of Bottom Tow Characteristics of Bottom Tow
• Onshore fabrication
• Installation of multiple lines in single operation
• Buoyancy pipe
• Pressurised annulus
• Bottom tow into field using tugs
• Alternative connection methods
ADT-PPT-487
