Transcript
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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