In an area extending aerially for approximately 4100 km2, the Nappamerri Trough PPL's incorporate at least five distinct geological regions and contain large gas resources within the coal measure sequence of the Permian Cooper Basin. Due to sparse well coverage in the area, the spatial distribution of target reservoirs cannot be properly understood without an understanding of the palaeogeography at the time of deposition. Re-interpretation of the existing well data within a sequence stratigraphic framework has been undertaken to enable the development of a suite of predictive palaeogeographic maps. Given the sparse well data, often poor seismic quality and the absence of palynological dates in the Nappamerri Trough (due to excessive formation temperatures) the approach, although not in the traditional realm of sequence stratigraphy (the passive margin) is considered valid and the most appropriate means of generating a meaningful suite of regional correlations. In addition, a number of alternative data sources were incorporated to further strengthen the correlations and subsequent models. The expertise of a world renowned sequence stratigrapher was sought (George Allen), rock typing data was included into the dataset and a stronger reliance on stacking patterns and log signatures was adopted. Reservoir potential was identified in most stratigraphic intervals, however, the quality and predictability of these reservoirs varies greatly. Consequently preferences were assigned to those stratigraphic units with the highest confidence in intersecting reservoir with significant height and areal extent. Given the relatively immature status of exploration in the Nappamerri Trough PPL's, this method is favoured as it ranks the reservoir unit according to its average expected reservoir attributes over a given area. This approach is not meant to exclude those reservoir units with higher levels of uncertainty, rather these should be addressed on a prospect rather than play basis. Potential reservoir intervals (Table 1) were selected according to their reservoir characteristics and geometries as determined by their sequence stratigraphic setting. Lowstand and late highstand systems tracts are considered the most prospective intervals. Typically sand bodies deposited within these tracts favour the development of amalgamated to clustered sand bodies (sheet like sands) with good reservoir continuity. This contrasts with ribbon or isolated sand body architecture typically associated with ATST's, TST's and early HST's when accommodation space generation typically exceeds sediment supply. It should be noted here that potential reservoir intervals are prioritised according to their reservoir characteristics only. The same reservoir interval however, may be incorporated into more than one exploration play. This depends not only on its reservoir characteristics but also on the combined effects of structural/geological setting, conventional and/or non-conventional status, play stacking and whether or not the play is proven. This delineation of broad scale reservoir development trends is intended to significantly reduce exploration risk, contribute to the development of exploration play models and subsequently lead to the location of high intensity seismic effort and exploration wells.