AVO investigation of the Ben Nevis reservoir at the Hebron asset

Andrew John Royle, John D. Logel, Laurence R. Lines

This paper investigates the amplitude variation with offset (AVO) behavior at the Ben Nevis reservoir zone in an attempt to predict API oil gravity variations. Intercept, gradient, fluid factor, and density reflectivity attribute volumes were extracted to observe the AVO effects at the reservoir zone. These attributes isolated the oil zones associated with the Ben Nevis reservoir and showed differences between the adjacent fault block reservoir zones. Detailed crossplotting at the oil bearing well locations isolated anomalous zones associated with the response at the top of the reservoir. In comparison the highlighted anomalous crossplot zones showed differences for the varying oil gravity.