Based on the integration of results of archival and modern seismic surveys, well logging data and results of analytical studies of core material, the structure of the Permian prospective petroleum play (PPPP) in the north-eastern framing of the Siberian Platform was clarified. In accordance with the author’s algorithmic approach, the map of minimum economic sizes of discoveries was constructed. This map takes into account predicted characteristics of reservoirs and the probable structural complexity of geological features.