Drilling Survey preparation  : Metocean conditions, hindcast & forecast

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Challenge ID

CLS_OFF.2.5

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Title

Drilling Survey preparation  :Metocean conditions: hindcast & forecast

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Originator of Challenge

CGG

General description

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What data/products do you currently use ?

Need currently being partly fulfilled.

Forecast:  ocean current data, consultancy, model data such as Hycom, ECMWF, NCEP

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When do you use this kind of dataset?

These data are needed during the Survey preparation (Hindcast). They are helpful for finding a weather window to conduct operations and avoid downtime.

It hen helps to reduce the survey duration by planning and optimizing operations. (Forecast)

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What are your actual limitations and do you have a work around? 

Ocean current forecast:

• Need for a better resolution (space and time), reliability and practical translation into operation at sea optimization

Ocean models:

• There’s a need to improve the quality and the reliability of these models to meet with O&G needs. Reliability indicators are needed.
• Enhancing hindcasts and forecast quality at fix point. Resolution can be inadequate: ground truthing at block level.

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Needs and expectations on EO data

Satellite images:  they are just inputs to other products or services.

The company needs the global picture as a result of a combination of in-situ measurements, EO and combination of EO, models, and this is what is expected from the service companies.

Challenge classification

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Lifecycle stage

Pre license

Exp.

Dev.

Prod.

Decom.

Score from impact

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Geographic context/restrictions

• Offshore operations / worldwide
• West Africa
• French Guyana
• Namibia
• Mozambique Channel

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Topographic classification / Offshore classification

• Shallow Water
• Deep Water
• Inland Lakes

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Activity impacted/concerned

H&S benefit, Strategic decision enabler,

More efficient planning: ex. bathymetry planning for a survey, which boat, best window…

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Urgency

(How quickly does the user need the solution)

Information requirements

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Update frequency

Daily for operation, weekly, annual

Squall warning: daily update/twice daily

Seismic survey   : instantaneous

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Temporal resolution

Tidal: hourly

Current: daily if nothing else is available

Monthly mean

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Spatial resolution

1m, 100m, 1 km  / 1:50000, 1:25000 ...

Model : ¼°

SAR image : 1/150000

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Data quality

Higher for lakes as info for ground truthing/Very important during operations

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Data Coverage and extent

Over survey area, typically 100km x 100km/Along track, programmable

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Example formats

e.g. GeoTIFF, Report, GIS formatsn NetCDF etc...

raw data and geotiffs

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Timeliness

RT application as fast as possible/Squall: up to date/Metocean: that day

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Existing standards

Looking for OGP standards