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Mitigating Drilling Hazards in the Forties Field Using Ocean Bottom NodesNormal access

Authors: S. Ronen, K. Koster, D. Monk, R. Bouraly and A. Rokkan
Event name: 73rd EAGE Conference and Exhibition incorporating SPE EUROPEC 2011
Session: Geophysics for Geohazards & Environment
Publication date: 23 May 2011
DOI: 10.3997/2214-4609.20149290
Organisations: SPE, EAGE
Language: English
Info: Extended abstract, PDF ( 745.27Kb )
Price: € 20

Summary:
Reliable seismic imaging of gas accumulations in the shallow subsurface underneath the platforms in the Forties field are mitigating drilling risks and reducing drilling cost. We chose to use Ocean Bottom Seismometers for the ability to operate safely and efficiently in a busy oilfield. The resulting seismic image allows us to pay extra care during drilling of wells where gas is likely to be encountered. Conversely, we can avoid rigging the gasdiverter line when no gas is expected. The resulting operations are therefore optimized in terms of safety and costs.


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