The South Furious Field is a complexly faulted, upthrust anticline with a prospective sequence consisting of a Middle Miocene, lower coastal plain clastic succession. The field is characterised by extremely incoherent seismic data from which only a late Middle Miocene unconformity can be mapped with confidence.

The dense faulting and the discontinuous nature of the reservoir sands have made attempts at log correlation virtually impossible. However, in the Eastern Area of the field an extensive set of RFT derived pressure data has revealed several correctable pressure zones. The pressure zones have defined at least six major accumulations and several minor ones. Furthermore, at least two different aquifer regimes have been identified.

Early seismic interpretations, although unable to resolve the structural complexity of the prospective sequence, noted a correlation between hydrocarbon bearing intervals in wells and the occurrence of low frequent ‘wormy’ shaped reflections on seismic sections. In area without well control such anomalies were used as hydrocarbon indicators. These together with the pressure zone correlations and a simplified faulting pattern derived from HDT interpretation were used to construct maps of the top seals of each of the major accumulations.

The maps derived from this approach have been used for development planning, well targetring and oil-in-place estimations.

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