Snorre Field was discovered by Saga Petroleum (acquired by Norsk Hydro in 1999) in 1979, and came on stream in August 1992. Development of the southern part of the field was aided by a 3-D seismic survey shot in 1983 and another in 1997 for reservoir characterization. This paper describes how Saga used these surveys (known as GE83 and SG9701, respectively) to determine the value of time-lapse seismic data for field management.

Snorre Field is on the Tampen Spur in the Norwegian sector of the Northern North Sea (Figure 1). There are two main reservoirs—the Triassic Lunde Formation...

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