CENTRE FOR OFFSHORE FOUNDATION SYSTEMS Part II Introduction to Offshore Structures Hodjat Shiri Centre for Offshore Foundation Systems (COFS) July 2009
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CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Part II
Introduction to
Offshore Structures
Hodjat ShiriCentre for Offshore Foundation Systems (COFS)
July 2009
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Offshore Installation of Fixed Platforms:
• Topsides :
• Jackets :
Lifting by HLV
Floatover by FLB
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Topside Lifting Installation:• HLV Positioning & Mooring• Transportation Barge approach• Transportation Barge Mooring alongside HLV• Lifting rig connection• Slings Tensioning• Sea-fastening cutting• Topside lifting• Transportation Barge release• HLV Re-positioning • Deck mating• Installation Completion
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Topside Lifting Installation:
HLV
Topside Barge
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Topside Lifting Installation:
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Topside Lifting Installation:
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Topside Lifting Installation:
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Topside Lifting Installation:
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Topside Lifting Installation:
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Topside Lifting Installation:• HLV Positioning & Mooring• Transportation Barge approach• Transportation Barge Mooring alongside HLV• Lifting rig connection• Slings Tensioning• Sea-fastening cutting• Topside lifting• Transportation Barge release• HLV Re-positioning • Deck mating• Installation Completion
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
• FLB Anchoring• FLB Approach to Jacket• FLB Enter Jacket Inside• FLB Mooring to Jacket• Sea-Fastening Cutting• Barge Ballasting• Deck Mating & Load Transfer (Jacking, Ballasting…)• Mating Completion• FLB Release• FLB Anchor recovery• Installation Completion
Topside Float Over Installation:
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Topside Lifting Installation:
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Topside Lifting Installation:
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
• HLV Positioning & Mooring• Transportation Barge approach• Transportation Barge Mooring alongside HLV• Lifting rig connection• Slings Tensioning• Sea-fastening cutting• Jacket lifting and upending• Transportation Barge release• HLV Re-positioning • Jacket positioning ( Position, Orientation, Direction)• Pile Driving• Installation Completion
Jacket Lifting Installation:
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Jacket Launching Installation:• Launch Barge Anchoring • Launching Arms Preparation• Buoyancy Tanks check• Barge Approach to right position• Sea-fastening Cutting• Barge Ballasting and Tilting• Jacket Sliding & Barge Moving• Jacket launching & Floating• Jacket Upending (Lifting or Self-Upending)• Jacket Positioning ( Tugs or HLVs)• Pile Driving• Installation Completion
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Jacket Launching Installation:• Launch Barge Anchoring • Launching Arms Preparation• Buoyancy Tanks check• Barge Approach to right position• Sea-fastening Cutting• Barge Ballasting and Tilting• Jacket Sliding & Barge Moving• Jacket launching & Floating• Jacket Upending (Lifting or Self-Upending)• Jacket Positioning ( Tugs or HLVs)• Pile Driving• Installation Completion
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Jacket Launching Installation:
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Jacket Launching Installation:
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Launching Analysis:
Launching
Self-UpendingBarge Release
1 2 3
4 5
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Jacket Pile Driving :
• Pile Transportation Barge comes alongside HLV• Pile Preparation• Jacket Preparation• Hammer Preparation • Pile Lead Section lifting up and Stabbing into jacket leg or Sleeve• Hammer lift up and stabbing on top of pile • Pile driving according to engineering sequences• Lifting up the First add-on, Stabbing to Lead section, Welding• Non Destructive Tests on Welds (NDT)• Pile Stopper Removal and Driving first add-on• Regular check of Jacket level ness • Continuos Blow Count and Dynamic Stress Applied on Pile• Continue to Finish Pile Driving• Installation of Crown Plates• Installation of Transition Pieces
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Jacket Pile Driving :
Hydraulic Hammer Diesel Hammer
Pile Lift Up
Piles Arrangement
Hammer Stabbing
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
Jacket Pile Driving :
Completed Jacket Pile Cut-off Crown Plate Welding
Pile in Driving
CENTRE FOR OFFSHORE FOUNDATION SYSTEMS
End of Part Two
Thank You
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