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

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

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Metocean

Metocean at Statoil

Ocean Prediction Networking Final Seminar 12.05.2011

Kenneth Eik

Page 2: 1 Metocean Metocean at Statoil Ocean Prediction Networking Final Seminar 12.05.2011 Kenneth Eik.

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www.statoil.com

Page 3: 1 Metocean Metocean at Statoil Ocean Prediction Networking Final Seminar 12.05.2011 Kenneth Eik.

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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

Page 4: 1 Metocean Metocean at Statoil Ocean Prediction Networking Final Seminar 12.05.2011 Kenneth Eik.

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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

Page 5: 1 Metocean Metocean at Statoil Ocean Prediction Networking Final Seminar 12.05.2011 Kenneth Eik.

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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

Page 6: 1 Metocean Metocean at Statoil Ocean Prediction Networking Final Seminar 12.05.2011 Kenneth Eik.

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Operations needing current forecastsSeismic surveys Oil spill drift

Rig movesOperations in ice

Page 7: 1 Metocean Metocean at Statoil Ocean Prediction Networking Final Seminar 12.05.2011 Kenneth Eik.

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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!

Page 8: 1 Metocean Metocean at Statoil Ocean Prediction Networking Final Seminar 12.05.2011 Kenneth Eik.

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LOfoten and VEsterålen CURrents (LOVECUR)

Page 9: 1 Metocean Metocean at Statoil Ocean Prediction Networking Final Seminar 12.05.2011 Kenneth Eik.

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Real-time current data

Page 10: 1 Metocean Metocean at Statoil Ocean Prediction Networking Final Seminar 12.05.2011 Kenneth Eik.

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Arctic operations

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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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