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End user requirements (2) – some examples Alaska summer operations

End user requirements (2) – some examples Alaska summer operations. Paul Verlaan. Phases of a project. Construct. Assess. Design. Select. Operations. Phases of a project. Construct. Assess. Design. Select. Operations. 1. Preliminary area description

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End user requirements (2) – some examples Alaska summer operations

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  1. ShellExploration&Production End user requirements (2) – some examplesAlaska summer operations Paul Verlaan

  2. Phases of a project Construct Assess Design Select Operations

  3. Phases of a project Construct Assess Design Select Operations • 1. Preliminary area description • historical data on ice type and ice concentration at one location (offshore structure) or along a certain route (shipping, pipeline)

  4. Phases of a project Construct Assess Design Select Operations • 2. drilling • ice type, ice thickness, ice drift, floe size data around drilling rig • continuous data around one location • 3. seismic operations • ice edge • avoid small floes of ice • cover a wide area once per day

  5. Phases of a project Construct Assess Design Select Operations • Geotechnical, surveys • ice edge • cover a wide area once per day

  6. Phases of a project Construct Assess Design Select Operations • Local and global ice loads • historical data on ice type, ice drift, floe size data • historical data on ice thickness, keel depth, sail height, consolidated layer thickness • mechanical properties of ice • full-scale ice load data • ice-structure interaction data

  7. Phases of a project Construct + install Assess Design Select Operations • Installation of structures, pipelines • ice edge • cover a wide area once per day

  8. Phases of a project Construct Assess Design Select Operations • 1. Marine transportation of oil and gas • ice concentration, ice type, ice thickness, ice pressure • cover a wide area once per day • 2. Evacuation, oil spill response, platform operations • ice type, ice thickness, ice pressure, ice drift • continuous data around one location

  9. Phases of a project Construct Assess Design Select Operations • 3. Supply vessels • ice concentration, ice type, ice thickness, ice pressure data • cover a wide area once per day

  10. Limitations of present ice data • Limited temporal resolution • Operations around one location (drilling, EER, OSR) • Limited insight in ice-thickness parameters • Design • Navigation

  11. Alaska summer/autumn operations (June –December 2007)

  12. Alaska summer 2007 operations

  13. Kulluk Frontier discovery • Two drill rigs + 2 ice breakers + 2 anchor handlers + 2 supply vessels • Seismic vessel + 2 support vessels • Geotechnical barge + anchor handler • Survey vessel + support vessels • Oil spill response vessels

  14. Sources of satellite data: • SAR data from RADARSAT-1 satellite (June – December 2007) • 31 images from Beaufort (100 x 100 km) • 23 images from Chukchi (100 x 100 km) • 187 images from Beaufort- Chukchi (450 x 450 km) • NOAA - AVHRR data • MODIS data from TERRA / AQUA • Passive microwave data

  15. Additional sources of data • Ice observations from icebreakers and drilling rigs • Continuous ice drift and ice draft data collected at three locations near Sivulliq • Enhanced marine radar images from drilling rigs and icebreakers

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