Petroleum Geo-Services (PGS) and its partners have wrapped up a major 2D seismic survey offshore Eastern Indonesia and Australia’s northern margin.

The cross-border Abadi-Arafura-Aru (AAA) MegaProject covers the petroleum system along the southern and southeastern margin of Indonesia, by tying key wells and discoveries along the northern margin of Australia, which is more mature in terms of exploration.

The project is based on the integration of three seismic surveys and full tectono-stratigraphic interpretation of 26,500 line kilometres of modern long offset, MultiClient 2D seismic data, largely acquired using PGS GeoStreamer technology.

It includes fully matched, interpreted modern long offset seismic data with key horizons tied to released well data in Indonesia and Australia.

PGS said the three individual surveys are combined into a single consistently matched seismic dataset, the interpretation of which provides a regional overview from the Petrel Sub-basin – West Abadi area to Aru, Kei and Tanimbar Islands and extending to the Banda Arc Accretionary Prism.

With these, the project provided comprehensive interpretation over the area by tying over 30 wells to a common 2D seismic database giving the ability to understand this complex new frontier area.

The project was performed in conjunction with Spec Partners, Horizon, and MIGAS, having been the basis for detailed geological analyses by Horizon.

These include tectonic and palinspastic reconstructions from Permian to present, geochemical modelling of all potential source rocks in the area, well failure analyses, play fairway mapping, and prospectivity assessment.

PGS said it would help oil companies gain a better understanding of the petroleum systems in this vast, underexplored area, helping them to identify exploration sweet spots with increased confidence.