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4D Seismic Response of Primary Production and Waste Injection at the Valhall Field
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 65th EAGE Conference & Exhibition, Jun 2003, cp-6-00300
Abstract
A-22 4D SEISMIC RESPONSE OF PRIMARY PRODUCTION AND WASTE INJECTION AT THE VALHALL FIELD Introduction A new 3D seismic data set was acquired across the Valhall field during the summer of 2002. The presences of strong production induced seismic responses were expected due to the nature of the field and earlier observations. The Valhall reservoir is a highly porous chalk which compacts as the reservoir is depleted. The compaction results in a “hardening” and thickness reduction of the reservoir and subsequent subsidence of the overburden and the seafloor. The new data was processed using a “similar” processing flow as was