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Ekofisk PRM Seismic OperationsNormal access

Authors: A. Bertrand, G. Jeangeot, P.G. Folstad, A. Grandi, S. Buizard, H. Hoeber, H. Al-Khatib and H. Nakstad
Event name: Second EAGE Workshop on Permanent Reservoir Monitoring 2013 – Current and Future Trends
Session: A Bohemian Rhapsody of Case Histories
Publication date: 03 July 2013
DOI: 10.3997/2214-4609.20131295
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 3Mb )
Price: € 20

The world’s largest optical Permanent Reservoir Monitoring (PRM) system was installed at Ekofisk in 2010. The Ekofisk LoFS system consists of nearly 4000 seabed multicomponent sensors and a top side recording unit provided by Optoplan and a containerized source operated on a supply vessel. After the first 4 surveys, all the sensors were still active and very high repeatability (3-4% NRMS) had been achieved. One of the key factors to unraveling full value of a PRM system is to be able to handle seismic operations in a safe, integrated and efficient manner in order to deliver high quality seismic volumes for interpretation in a rapid turnaround. In this paper, we present the different aspects of seismic operations at Ekofisk: seismic source, recording system and data transfer, QC and processing, and discuss how their integration enables timely delivery of high quality 4D seismic products.

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