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.

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Marginal offshore production platform feasibility

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

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