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