A geostatistical methodology was used to build the low frequency model. It utilised all available information (wells,
horizons, trends and velocity field) producing a stable model away from well control while providing an exact match
at the well locations. Through the initial and subsequent updating of the project, an appreciation was gained as to
the importance of the low frequency model in obtaining accurate reservoir predictions away from well control. In this
case it was a difficult procedure due to the lack of conformity of the geology. That is, the volume doesn’t easily break into
layers, and therefore modelling extensive horizons at target level was not possible. Understanding the uncertainty
in the model was essential and is an ongoing part of the investigation.