Mobile offshore
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Transcript of Mobile offshore
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Marcelo Guimarães, Sylas Carvalho, Vitor Kock
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Overview
• Introduction •Definition•Types of MODUs
Drillships Semi-submersibles Jack-ups
•Considerations•Future Developments•Conclusion•References
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Introduction
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Definition
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1. Drillships2. Semisubmersibles3. Jack-ups
Types of MODUs
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•Huge capacity
•Exceptional mobility
Mobile Offshore Drilling UnitsDrillships
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•Do not rest on the sea floor.
•Exception stability
•“Semis” are well suited for drilling in rough waters.
Mobile Offshore Drilling UnitsSemisubmersibles
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•Self-elevating
•Ability to extend the drilling package out over the side of hull
•Towed by several towboats to their drilling location
Mobile Offshore Drilling UnitsJack-ups
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Fixed X Mobile
Considerations
Fixed Platforms Mobile Offshore Drilling Units
•Directly attached to the ocean floor
• Deployed in water less than 1,700 feet (520 meters) deep
•Immobility
•Can be moved without substantial effort
•Can operate in the most severe, hostile, and usually artic conditions
•Can be deployed in Ultra-deepwater
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•Cheaper•Safer•More Versatile•Deeper
Future Developments
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Type of MODUs
Characteristics
DepthMobility
Min Max
Jackup 30 ft 550 ftrequire a second vessel to tow
them to the right location
Semisubmersible 150 ft 10000 ft Some have propulsion systems
Drillship 100 ft 12000 ft Drill ships can pilot to the drill site
Conclusion
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Content:
• http://www.diamondoffshore.com/offshore-drilling-basics/offshore-rig-basics
• http://science.howstuffworks.com/environmental/energy/jackup-oil-drilling.htm
• http://petrowiki.org/PEH%3AOffshore_Drilling_Units• http://
science.howstuffworks.com/environmental/energy/oil-drilling8.htm
References
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Images:
• http://worldmaritimenews.com/archives/77219/hercules-offshore-to-acquire-jackup-rig-ben-avon-usa/
• http://upload.wikimedia.org/wikipedia/commons/a/a1/Deepwater_drilling_systems_2.png
• http://static.offshoreenergytoday.com/wp-content/uploads/2012/04/Seadrill-Gets-LoA-for-Semi-Sub-Rig.-Backlog-Now-at-USD-13.3-bln.jpg
• http://www.diamondoffshore.com/offshore-drilling-basics/offshore-rig-basics
References