Integrated dip data, seismic and potential field data interpretation for fault analysis of the Elk/Antelope gas field

Abstract

The Elk/Antelope gas field was discovered during drilling of the Elk-1 and Elk-4 wildcat wells in the eastern Papuan Fold Belt, Papua New Guinea. The gas field is located in a frontier greenfields area with limited wells, regional scale potential field data datasets and 2D seismic datasets of varying quality. The Elk structure is a fractured carbonate reservoir while the Antelope structure is potentially a reefal carbonate reservoir with fracture control on permeability. An important consideration in reservoir modelling of dual porosity systems is the effect of faults on performance and storage of the reservoir. Key factors are the fault damage zone width and its affect on permeability. The integrated interpretation of dip data, Seismic and potential field data has been conducted with the aim of identification of faults in the Elk/Antelope reservoir and analysis of their likely effect on reservoir performance.