Abstract

The Clyde oil field in the southern North Sea comprises a Jurassic (Fulmar Sand) reservoir developed on a fault-bounded terrace on the margin of the Central graben. Cross-sectional area and bed-length balance clearly demonstrate the presence of both shallow and deep fault detachments. Seismic remapping has substantiated this model and demonstrates the decoupling of the basement and shallow listric fault sets. The new model has significance in terms of variations in reservoir quality and possible reservoir discontinuities resulting from fault seals. Of regional interest is the possibility of additional growth-fault plays of this type within the North Sea basin.--Modified journal abstract.

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