Transcript a short brief about Offshore Pipeline Installation Engineering

a short brief about
Offshore Pipeline Installation
Engineering
Vladimir Medio Sentosa
Offshore Pipeline Engineer (Installation)
SapuraAcergy Sdn. Bhd.
August 30, 2010
1 | Strength and Depth
Offshore pipeline / installation engineering?
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Pipeline?
Platform
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Pipeline
Platform
Pipeline?
FPS
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Pipeline
Onshore
Main Equipment
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Conventional laybarge:
• Using mooring to keep position
• Coverage area up to WD 50-100m
Modern laybarge:
• Using DP (dynamic positioning) to keep position
• Coverage area more than WD 50m
6 | Strength and Depth
Process Overview
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Start-Up / Initiation
Loading and storage
Firing Line
– Welding
– NDT
– Field joint coating
Tensioning
Laydown
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Emergency
– Abandonment and Recovery
Installation Analysis
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Installation analysis:
– Start up, normal laying, A/R analysis, laydown
– Local buckling check
– Fatigue analysis
– Free span / bottom roughness
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Based on DNV OS F101
– Section 12 K300, Simplified laying criteria
– Area: Overbend and Segbend
– Check: Stress and Strain
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Result of analysis is exceed the criteria?
– Environmental loads: Hs, T, current
– Optimizations: roller setting (barge/stinger), tension, trim, stinger
– Others: buoyancy tank
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S-Lay Method
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OFFPIPE Software
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Static analysis:
– Start up, A/R analysis, laydown, free span / bottom roughness
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Dynamic analysis
– Normal laying: RAO, environment condition
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Output OFFPIPE
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Thank you!
Vladimir Medio Sentosa
Offshore Pipeline Engineer (Installation)
[email protected]
Desk : +60386572961
Mobile: +60173531041
Alternatively:
[email protected]
www.vladvamphire.wordpress.com
13 | Strength and Depth