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Metocean

Metocean. Metocean at Statoil Ocean Prediction Networking Final Seminar 12.05.2011 Kenneth Eik. www.statoil.com. Need for metocean information. Design basis for marine structures – extreme values and fatigue Floating and fixed structures Pipelines and subsurface structures Land terminals

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Metocean

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  1. Metocean Metocean at Statoil Ocean Prediction Networking Final Seminar 12.05.2011 Kenneth Eik

  2. www.statoil.com

  3. Need for metocean information • Design basis for marine structures – extreme values and fatigue • Floating and fixed structures • Pipelines and subsurface structures • Land terminals • Basis for evaluation of marine operations • Reliable weather and ocean forecasts • Data as input to EIA studies (i.e. oil drift) • Design- and energy basis for offshore renewable energy Huldra jacket Tidal plant in Kvalsundet

  4. Tasks – data collection and analyses • Wind and waves • Currents and water level • Sera ice, icebergs, waves in ice/ice in waves • Oceanographic parameters • Temperature, salinity, density, oxygen, etc • Marine growth • Meteorological parameters • Temperature, precipitation, humidity, icing, wind chill, etc. • Always a need to provide data (own initiative or as JIPs) • Measurement campaigns • Hindcast studies • Data purchase • Modelling Icing at Melkøya January 2006

  5. Who ? • Einar Nygaard – Oceanographer - UiB • Børge Kvingedal – Meteorologist - UiB • Kjersti Bruserud – Oceanographer –UiB • Odd Jan Andersen – Meteorologist – UiB • Kenneth J. Eik – Civil Engineer Marin Technology – NTNU • Richard Gaches – Oceanographer- UK • Sverre Haver - Civil Engineer Marin Technology – NTNU • Martin Mathiesen - POLYTEC

  6. Operations needing current forecasts Seismic surveys Oil spill drift Operations in ice Rig moves

  7. What are the requirements to current forecasts • Not totally wrong! • Direction forecasted 90° compared with real direction or worse • Magnitude more than 200% or less than 50% compared to real magnitude • Need to capture severe and extreme events! • Today most Statoil operations are performed without current forecasts • The skills of oceanographic models need to be documented and communicated!

  8. LOfoten and VEsterålen CURrents (LOVECUR)

  9. Real-time current data

  10. Arctic operations

  11. Conclusions • Oceanographic models are needed in a wide range of offshore operations • Hindcast • Forecasts • The quality of oceanographic models need to be known! • Studies performed by the offshore industry so far shows that further developments are needed in a number of ocean basins. • Access to good ice-ocean models even more important in the future • Statoil may provide real time current measurements on request.

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