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Time-lapse Refraction Seismic MonitoringNormal access

Authors: F. Hansteen, P. B. Wills, J. C. Hornman, L. Jin and S. J. Bourne
Event name: 72nd EAGE Conference and Exhibition incorporating SPE EUROPEC 2010
Session: Time Lapse Seismic (EAGE)
Publication date: 14 June 2010
DOI: 10.3997/2214-4609.201400641
Organisations: SPE, EAGE
Language: English
Info: Extended abstract, PDF ( 2.05Mb )
Price: € 20

Summary:
A novel seismic technique for reservoir monitoring has been developed and tested in a resent field trial at the Peace River heavy oil field in Alberta, Canada. By measuring time shifts on first arrival head-waves from a refracting layer below the reservoir, the method aims to produce high-resolution areal maps of reservoir time shifts at a much lower cost than conventional 4D seismic. Good lateral resolution is achieved by numerically redatuming the wave field recorded at surface to a datum just above the reservoir. Preliminary results show plausible one-way time-lapse time shifts in the reservoir of the order of 2 ms, caused by variation in reservoir fluid pressure in the vicinity of active steam injectors.


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