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Marginal offshore production platform feasibility
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Marginal offshore production platform feasibility

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Final presentation of a feasibility study performed this year (2009) covering many aspects of marginal platform design, fabrication, transport and installation.

Final presentation of a feasibility study performed this year (2009) covering many aspects of marginal platform design, fabrication, transport and installation.

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  • 1. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING Iv-Oil & Gas www.iv-groep.nl DEVELOPMENT OF A MARGINAL SATTELITE FIELD
  • 2. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING INTRODUCTION Iv-Oil & Gas www.iv-groep.nl
  • 3. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING INTRODUCTION
    • Wintershall Noordzee BV is investigating the feasibility to utilize a low cost option to develop satellite fields located in the Dutch Sector of the North Sea where the water depth ranging from 20 to 35 meters.
    • PHILOSOPHY:
      • The design shall allow for re-use after field depletion
      • Lifecycle cost shall always be considered
      • Simple installation/de-installation methodology
      • An ergonomic acceptable lay out
      • Free water knock out
      • Renewable energy
    Iv-Oil & Gas www.iv-groep.nl
  • 4. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING INTRODUCTION
    • STUDY OBJECTIVES
      • Define a concept,
      • Define a generic topside,
      • Estimate topside weight and space requirements,
      • Recommend a transport, assembly and installation method,
      • Cover implementation aspects of project execution,
      • Estimate capital expenditure.
    Iv-Oil & Gas www.iv-groep.nl
  • 5. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING INTRODUCTION
    • STUDY PARAMETERS
      • Site data (20 to 35m water depth)
      • Base process data (2 producing wells, 1.8 mln m 3 /d)
      • Materials of construction (Duplex stainless steel)
      • Utilities (Emergency diesel, solar cells and wind turbines)
      • Emergency overnight shelter (4 persons)
      • Design and fatigue life (20 years, Fatigue: x5, x10)
      • Other (wire line operations, no crane)
    Iv-Oil & Gas www.iv-groep.nl
  • 6. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SUBSTRUCTURES Iv-Oil & Gas www.iv-groep.nl
  • 7. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SUBSTRUCTURES
    • INSTALLATION OPTIONS
      • Crane barge installed with driven piles
      • Installed by jack-up rig or construction barge
      • Self installing
    • SUBSTRUCTURES
      • Conventional multi-legged jacket
      • Minimal braced tower jacket
      • Conductor supported modular structure
      • Monotower
      • Self installing platforms
    Iv-Oil & Gas www.iv-groep.nl
  • 8. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SUBSTRUCTURES CRANE/BARGE INSTALLED - MULTILEGGED JACKET
    • Advantages
    • Proven concept
    • Supports all marginal topsides
    • Can support work-over units
    • Disadvantages
    • Requires heavy lift vessel
    • Main pile jackets require field welds
    • High installation costs
    Iv-Oil & Gas www.iv-groep.nl
  • 9. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SUBSTRUCTURES CRANE/BARGE INSTALLED – MINIMAL BRACED
    • Advantages
    • Low weight
    • Disadvantages
    • Requires heavy lift vessel
    • Limited future expansion
    • Jack-up rig required for work-over
    Iv-Oil & Gas www.iv-groep.nl
  • 10. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SUBSTRUCTURES RIG/BARGE INSTALLED – CONDUCTOR SUPPORTED
    • Advantages
    • Cost effective
    • Disadvantages
    • Topsides limited to 200 tonnes
    • Permitting
    • Not to be pursued
    Iv-Oil & Gas www.iv-groep.nl
  • 11. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SUBSTRUCTURES RIG/BARGE INSTALLED – MONOTOWER
    • Advantages
    • Low weight
    • Protected conductors and risers
    • Disadvantages
    • Cannot pre-drill wells
    • Work-over requires drilling rig
    • Limited topside weight
    • Sensitive to dynamic motions  fatigue  additional bracings
    Iv-Oil & Gas www.iv-groep.nl
  • 12. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SUBSTRUCTURES SELF INSTALLING – SIP I
    • Advantages
    • Transport floating on suction piles
    • Disadvantages
    • Separately installed topsides
    Iv-Oil & Gas www.iv-groep.nl
  • 13. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SUBSTRUCTURES SELF INSTALLING – SIP II
    • Advantages
    • No lifting required at location
    • Docking over pre-drilled wells
    • Re-usable
    • Maximized onshore commissioning
    • Disadvantages
    • Too large to be considered marginal
    • Larger deck width
    Iv-Oil & Gas www.iv-groep.nl
  • 14. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SUBSTRUCTURES SELF INSTALLING – SIP III
    • Advantages
    • No heavy lift vessel
    • Docking over pre-drilled wells
    • Re-usable
    • Maximized onshore commissioning
    • Disadvantages
    • Topside weight limited
    • Temporary frame required on barge
    Iv-Oil & Gas www.iv-groep.nl
  • 15. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SUBSTRUCTURES SELF INSTALLING – SIP IV
    • Advantages
    • No heavy lift vessel
    • Docking over pre-drilled wells
    • Re-usable
    • Maximized onshore commissioning
    • Disadvantages
    • Deck and substructure weight too
    • high for a marginal concept
    Iv-Oil & Gas www.iv-groep.nl
  • 16. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SUBSTRUCTURES
    • CONCEPT SELECTION
    • Installable without a heavy lift vessel
      • Ability to support a 3-well 400 tonnes topside
      • Low weight
      • Minimum decommissioning costs
      • The SIP 3 concept satisfies the criteria of the study and therefore it is selected as the preferred substructure for this study .
    Iv-Oil & Gas www.iv-groep.nl
  • 17. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SIP 3 Iv-Oil & Gas www.iv-groep.nl
  • 18. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SIP 3
    • SIP 3 CONCEPT
      • SPT patent
      • Barge installed, fully pre-installed and commissioned
    Iv-Oil & Gas www.iv-groep.nl
  • 19. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SIP 3
    • SIP 3 SUBSTRUCTURE
      • 3.5 m OD mono column, 3 suction piles
      • Horizontal mono column orientation for fabrication
      • Upending of the mono column from horizontal to vertical
      • Vertical (lifted) load out with the suction piles attached
      • Installation of topside (substructure at quay / harbour floor)
      • Vertical transportation of the total platform
      • Suitable transportation barge
      • Docking over existing pre-drilled wells
      • Future abandonment and re-installation
    Iv-Oil & Gas www.iv-groep.nl
  • 20. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING TOPSIDES Iv-Oil & Gas www.iv-groep.nl
  • 21. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING TOPSIDES
    • SIP 3 TOPSIDES
      • Main deck
      • Intermediate deck
      • Top deck (helideck)
    • PROCESS
      • 1.8 mln Nm 3 /d capacity
      • MOC: 900# Duplex
      • Free water Knockout (3 phase separation)
      • Oil skimmer tank
      • Clean water (<30 ppmv oil) overboard
      • 10” pipeline
    Iv-Oil & Gas www.iv-groep.nl
  • 22. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING TOPSIDES
    • CONTROL, SAFETY AND SHUT DOWN
      • Unmanned autonomous operating classification
      • Control via fibre optics by means of a DCS extension of the host platform
      • Gas detection and intruder alarm
      • Rig connected deluge system (dry)
      • H60 wall (E/I facilities and refuge)
    Iv-Oil & Gas www.iv-groep.nl
  • 23. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING TOPSIDES
    • ENERGY
      • 2400 watt energy consumption (unmanned mode)
      • Renewable energy sources (wind turbines and solar)
    • WEIGHT
      • Topsides : 340 tonnes
      • Substructure : 860 tonnes
      • Total : 1200 tonnes
    Iv-Oil & Gas www.iv-groep.nl
  • 24. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING FABRICATION, TRANSPORT AND INSTALLATION Iv-Oil & Gas www.iv-groep.nl
  • 25. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING FABRICATION, TRANSPORT AND INSTALLATION
    • FABRICATION
    • Fabrication at a facility which has unrestricted access to the North Sea.
      • Delivery of mono column (rolled and pre-welded)
      • Delivery of suction piles
      • Fabrication substructure
      • Integration of suction piles with the substructure
      • Installation of sacrificial anodes
      • Installation of SW pump, J-tube and riser inside column
    Iv-Oil & Gas www.iv-groep.nl
  • 26. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING FABRICATION, TRANSPORT AND INSTALLATION
    • TRANSPORT AND INSTALLATION
      • Marine spread :
        • Main tow tug 60-80 TBP
        • Assisting tug 40 TBP
        • Barge 300 – 400 ft
      • Strand jacks (4 x 600 ton)
      • Suction pumps (3 x)
      • Hang-off frame (at stern of barge)
      • Mooring winches (4 x allows for accurate manoeuvring)
      • ROV spread (seabed survey and wellhead inspection)
      • Survey & positioning spread (platform position monitoring)
    Iv-Oil & Gas www.iv-groep.nl
  • 27. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING FABRICATION, TRANSPORT AND INSTALLATION
    • INSTALLATION OPTIONS
      • Topside pre-installed at top of column, transport with barge SIP3, offshore lowered with strand jacks (1x jacking),
      • Topside pre-installed at lower section of column, transport with barge SIP3, substructure lowered offshore using strand jacks, deck lifted with strand jacks (2x jacking),
      • Topside installed at top of column, transport on barge, offshore single lift HLV/SSCV (1x lifting),
      • Topside on barge, substructure on barge, offshore installation deck with sheerleg/HLV/SSCV (2x lifting),
      • Transport topside on barge, substructure in hooks sheerleg (1x lowering, 1x lifting).
    Iv-Oil & Gas www.iv-groep.nl
  • 28. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING FABRICATION, TRANSPORT AND INSTALLATION
    • INSTALLATION
    • The installation of the platform consists of the following phases:
      • Preparation phase
      • Barge mooring
      • Platform lowering
      • Foundation installation
      • Completion activities
    Iv-Oil & Gas www.iv-groep.nl
  • 29. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING FABRICATION, TRANSPORT AND INSTALLATION
    • INSTALLATION
      • Sea fastening of substructure to the barge using hydraulic pins for swift release of the substructure from the barge after mooring,
      • Tow to the field using tugs,
      • Transport positive range of stability more than 50
      • degrees (criterion > 36 degrees),
      • Lowering stability (hydrostatic and hydrodynamic)
      • provided by ballast on the suction piles,
      • Lowering and lifting systems using strand jacks,
      • Suction pumps for the installation and future removal of the suction pile foundation,
      • No divers required for installation and removal of
      • installation equipment.
    Iv-Oil & Gas www.iv-groep.nl
  • 30. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SCHEDULE Iv-Oil & Gas www.iv-groep.nl
  • 31. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SCHEDULE
    • DEFINITION OF PROJECT PHASES
      • Conceptual design
      • Detail design
      • Procurement
      • Construction
      • Onshore test/commissioning
      • Transportation and installation
    Iv-Oil & Gas www.iv-groep.nl
  • 32. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING SCHEDULE
    • CONCEPT PLANNING
    Iv-Oil & Gas www.iv-groep.nl
  • 33. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING COST ESTIMATE Iv-Oil & Gas www.iv-groep.nl
  • 34. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING COST ESTIMATE OVERVIEW Iv-Oil & Gas www.iv-groep.nl --- --- --- --- Grand Total           --- ---     Overall contingency ~15% --- ---     Certification --- ---     Insurance --- ---     Fabrication and installation --- ---     Design & Procurement --- --- --- --- Equipment (incl commisioning) ---   --- --- Helideck ---   --- --- Topsides structual steel ---   --- --- Substructure (€·10 3 ) (€·10 3 ) (€·10 3 ) (€·10 3 )     costs costs Total Other Fabrication FoB Description
  • 35. PROJECT MANAGEMENT ● ENGINEERING ● CONTRACTING END OF PRESENTATION
    • QUESTIONS?
    Iv-Oil & Gas www.iv-groep.nl